./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be381633e08917ff7523167eb47da4558cd865b57872b34c3877295f48e457c8 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:44:14,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:44:14,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:44:14,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:44:14,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:44:14,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:44:14,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:44:14,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:44:14,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:44:14,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:44:14,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:44:14,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:44:14,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:44:14,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:44:14,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:44:14,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:44:14,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:44:14,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:44:14,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:44:14,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:44:14,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:44:14,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:44:14,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:44:14,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:44:14,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:44:14,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:44:14,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:44:14,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:44:14,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:44:14,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:44:14,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:44:14,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:44:14,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:44:14,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:44:14,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:44:14,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:44:14,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:44:14,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:44:14,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:44:14,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:44:14,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:44:14,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:44:14,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:44:14,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:44:14,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:44:14,703 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:44:14,704 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:44:14,704 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:44:14,704 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:44:14,705 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:44:14,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:44:14,705 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:44:14,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:44:14,706 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:44:14,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:44:14,707 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:44:14,707 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:44:14,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:44:14,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:44:14,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:44:14,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:44:14,709 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:44:14,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:44:14,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:44:14,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:44:14,711 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:44:14,711 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:44:14,711 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:44:14,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:44:14,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:44:14,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:44:14,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:44:14,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:44:14,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:44:14,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:44:14,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:44:14,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:44:14,715 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:44:14,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:44:14,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:44:14,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:44:14,716 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be381633e08917ff7523167eb47da4558cd865b57872b34c3877295f48e457c8 [2021-10-29 05:44:15,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:44:15,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:44:15,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:44:15,144 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:44:15,145 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:44:15,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/memsafety/test-0158-1.i [2021-10-29 05:44:15,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/data/38082c48a/74ce033d32784bf1bf686555c79d49e2/FLAG9ca03d9c4 [2021-10-29 05:44:15,840 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:44:15,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/sv-benchmarks/c/memsafety/test-0158-1.i [2021-10-29 05:44:15,857 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/data/38082c48a/74ce033d32784bf1bf686555c79d49e2/FLAG9ca03d9c4 [2021-10-29 05:44:16,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/data/38082c48a/74ce033d32784bf1bf686555c79d49e2 [2021-10-29 05:44:16,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:44:16,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:44:16,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:44:16,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:44:16,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:44:16,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38011a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16, skipping insertion in model container [2021-10-29 05:44:16,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:44:16,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:44:16,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:44:16,630 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:44:16,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:44:16,764 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:44:16,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16 WrapperNode [2021-10-29 05:44:16,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:44:16,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:44:16,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:44:16,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:44:16,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:44:16,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:44:16,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:44:16,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:44:16,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:44:16,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:44:16,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:44:16,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:44:16,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (1/1) ... [2021-10-29 05:44:16,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:44:16,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:16,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:44:16,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:44:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:44:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 05:44:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:44:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 05:44:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:44:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:44:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:44:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:44:17,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:44:17,394 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 05:44:17,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:17 BoogieIcfgContainer [2021-10-29 05:44:17,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:44:17,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:44:17,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:44:17,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:44:17,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:44:16" (1/3) ... [2021-10-29 05:44:17,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233ae4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:17, skipping insertion in model container [2021-10-29 05:44:17,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:16" (2/3) ... [2021-10-29 05:44:17,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233ae4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:17, skipping insertion in model container [2021-10-29 05:44:17,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:17" (3/3) ... [2021-10-29 05:44:17,408 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2021-10-29 05:44:17,414 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:44:17,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-29 05:44:17,477 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:44:17,489 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 [2021-10-29 05:44:17,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-29 05:44:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 8 states have (on average 2.25) internal successors, (18), 18 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) [2021-10-29 05:44:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-29 05:44:17,522 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:17,523 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-10-29 05:44:17,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-29 05:44:17,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1678, now seen corresponding path program 1 times [2021-10-29 05:44:17,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:17,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961483708] [2021-10-29 05:44:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:17,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:17,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:17,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961483708] [2021-10-29 05:44:17,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961483708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:17,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:17,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:44:17,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006359862] [2021-10-29 05:44:17,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:44:17,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:44:17,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:44:17,823 INFO L87 Difference]: Start difference. First operand has 19 states, 8 states have (on average 2.25) internal successors, (18), 18 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-29 05:44:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:17,867 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-10-29 05:44:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:44:17,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-29 05:44:17,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:17,879 INFO L225 Difference]: With dead ends: 16 [2021-10-29 05:44:17,879 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:44:17,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:44:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:44:17,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 05:44:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 8 states have (on average 1.75) internal successors, (14), 14 states have internal predecessors, (14), 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) [2021-10-29 05:44:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-10-29 05:44:17,917 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 2 [2021-10-29 05:44:17,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:17,918 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-10-29 05:44:17,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-29 05:44:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-10-29 05:44:17,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-29 05:44:17,919 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:17,919 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-10-29 05:44:17,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:44:17,920 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-29 05:44:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:17,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1679, now seen corresponding path program 1 times [2021-10-29 05:44:17,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:17,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926188779] [2021-10-29 05:44:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:17,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:18,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:18,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926188779] [2021-10-29 05:44:18,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926188779] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:18,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:18,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:44:18,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867772362] [2021-10-29 05:44:18,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:44:18,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:18,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:44:18,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:44:18,049 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-29 05:44:18,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:18,077 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-29 05:44:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:44:18,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-29 05:44:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:18,081 INFO L225 Difference]: With dead ends: 12 [2021-10-29 05:44:18,081 INFO L226 Difference]: Without dead ends: 12 [2021-10-29 05:44:18,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:44:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-29 05:44:18,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-29 05:44:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-10-29 05:44:18,088 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 2 [2021-10-29 05:44:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:18,089 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-10-29 05:44:18,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-29 05:44:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-10-29 05:44:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:44:18,090 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:18,091 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:44:18,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:44:18,094 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-29 05:44:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash 50621959, now seen corresponding path program 1 times [2021-10-29 05:44:18,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:18,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561477194] [2021-10-29 05:44:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:18,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:18,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:18,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561477194] [2021-10-29 05:44:18,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561477194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:18,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:18,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:44:18,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116895543] [2021-10-29 05:44:18,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:44:18,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:18,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:44:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:44:18,254 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-29 05:44:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:18,306 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-29 05:44:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:44:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-10-29 05:44:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:18,308 INFO L225 Difference]: With dead ends: 11 [2021-10-29 05:44:18,308 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 05:44:18,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:44:18,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 05:44:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 05:44:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.25) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-29 05:44:18,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 5 [2021-10-29 05:44:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:18,312 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-29 05:44:18,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-10-29 05:44:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-29 05:44:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:44:18,313 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:18,313 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:44:18,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:44:18,314 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-29 05:44:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1569280775, now seen corresponding path program 1 times [2021-10-29 05:44:18,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:18,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654495470] [2021-10-29 05:44:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:18,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:18,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:18,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654495470] [2021-10-29 05:44:18,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654495470] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:18,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:18,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:44:18,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727128429] [2021-10-29 05:44:18,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:44:18,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:18,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:44:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:44:18,490 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 5 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) [2021-10-29 05:44:18,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:18,542 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-10-29 05:44:18,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:44:18,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2021-10-29 05:44:18,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:18,544 INFO L225 Difference]: With dead ends: 10 [2021-10-29 05:44:18,544 INFO L226 Difference]: Without dead ends: 10 [2021-10-29 05:44:18,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:44:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-29 05:44:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-29 05:44:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.125) internal successors, (9), 9 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) [2021-10-29 05:44:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2021-10-29 05:44:18,551 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 6 [2021-10-29 05:44:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:18,555 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2021-10-29 05:44:18,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2021-10-29 05:44:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2021-10-29 05:44:18,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:44:18,556 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:18,556 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:18,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:44:18,559 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-29 05:44:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1403063817, now seen corresponding path program 1 times [2021-10-29 05:44:18,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:18,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029968220] [2021-10-29 05:44:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:18,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:18,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:18,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029968220] [2021-10-29 05:44:18,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029968220] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:18,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:18,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:44:18,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934648963] [2021-10-29 05:44:18,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:44:18,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:18,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:44:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:44:18,712 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:18,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:18,757 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-29 05:44:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:44:18,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:44:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:18,760 INFO L225 Difference]: With dead ends: 9 [2021-10-29 05:44:18,760 INFO L226 Difference]: Without dead ends: 9 [2021-10-29 05:44:18,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:44:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-29 05:44:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-29 05:44:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 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) [2021-10-29 05:44:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-29 05:44:18,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 7 [2021-10-29 05:44:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:18,766 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-29 05:44:18,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-29 05:44:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:44:18,767 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:18,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:18,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:44:18,768 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-29 05:44:18,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:18,769 INFO L85 PathProgramCache]: Analyzing trace with hash 545305418, now seen corresponding path program 1 times [2021-10-29 05:44:18,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:18,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005346856] [2021-10-29 05:44:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:18,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:19,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:44:19,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005346856] [2021-10-29 05:44:19,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005346856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:19,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:19,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:44:19,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723683012] [2021-10-29 05:44:19,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:44:19,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:44:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:44:19,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:44:19,085 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 6 states, 5 states have (on average 1.6) 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) [2021-10-29 05:44:19,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:19,167 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-10-29 05:44:19,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:44:19,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) 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 [2021-10-29 05:44:19,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:19,168 INFO L225 Difference]: With dead ends: 8 [2021-10-29 05:44:19,169 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:44:19,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:44:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:44:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:44:19,171 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) [2021-10-29 05:44:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:44:19,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-29 05:44:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:19,172 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:44:19,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) 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) [2021-10-29 05:44:19,172 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:44:19,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:44:19,175 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:44:19,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:44:19,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-29 05:44:19,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-29 05:44:19,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-29 05:44:19,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 05:44:19,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:44:19,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:44:19,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:44:19,189 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:44:19,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:44:19,193 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-29 05:44:19,195 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:44:19,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:44:19 BoogieIcfgContainer [2021-10-29 05:44:19,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:44:19,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:44:19,200 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:44:19,200 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:44:19,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:17" (3/4) ... [2021-10-29 05:44:19,205 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:44:19,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-29 05:44:19,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:44:19,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:44:19,222 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:44:19,272 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:44:19,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:44:19,275 INFO L168 Benchmark]: Toolchain (without parser) took 3131.03 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 65.1 MB in the beginning and 74.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:19,275 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory is still 82.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:44:19,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.93 ms. Allocated memory is still 109.1 MB. Free memory was 64.9 MB in the beginning and 77.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:19,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.60 ms. Allocated memory is still 109.1 MB. Free memory was 77.0 MB in the beginning and 75.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:19,278 INFO L168 Benchmark]: Boogie Preprocessor took 24.60 ms. Allocated memory is still 109.1 MB. Free memory was 75.2 MB in the beginning and 73.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:19,279 INFO L168 Benchmark]: RCFGBuilder took 546.53 ms. Allocated memory is still 109.1 MB. Free memory was 73.9 MB in the beginning and 62.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:19,282 INFO L168 Benchmark]: TraceAbstraction took 1799.91 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 61.8 MB in the beginning and 76.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:19,283 INFO L168 Benchmark]: Witness Printer took 72.70 ms. Allocated memory is still 142.6 MB. Free memory was 76.4 MB in the beginning and 74.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:19,286 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory is still 82.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 620.93 ms. Allocated memory is still 109.1 MB. Free memory was 64.9 MB in the beginning and 77.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.60 ms. Allocated memory is still 109.1 MB. Free memory was 77.0 MB in the beginning and 75.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.60 ms. Allocated memory is still 109.1 MB. Free memory was 75.2 MB in the beginning and 73.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 546.53 ms. Allocated memory is still 109.1 MB. Free memory was 73.9 MB in the beginning and 62.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1799.91 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 61.8 MB in the beginning and 76.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * Witness Printer took 72.70 ms. Allocated memory is still 142.6 MB. Free memory was 76.4 MB in the beginning and 74.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 523]: 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, 19 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 40 SDslu, 14 SDs, 0 SdLazy, 90 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 315 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:44:19,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043019da-4267-4c53-9f1c-22e37723d3df/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...