./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0019-1.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_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/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_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0019-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/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_9b3c4529-a673-4205-8f54-b95628f9798a/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 5a1ab43e825ce385252e3e834bebdceddee5ecd9c5749af5b0b2355e44f90dcd .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:10:26,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:10:26,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:10:27,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:10:27,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:10:27,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:10:27,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:10:27,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:10:27,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:10:27,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:10:27,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:10:27,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:10:27,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:10:27,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:10:27,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:10:27,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:10:27,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:10:27,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:10:27,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:10:27,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:10:27,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:10:27,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:10:27,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:10:27,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:10:27,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:10:27,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:10:27,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:10:27,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:10:27,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:10:27,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:10:27,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:10:27,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:10:27,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:10:27,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:10:27,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:10:27,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:10:27,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:10:27,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:10:27,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:10:27,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:10:27,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:10:27,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:10:27,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:10:27,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:10:27,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:10:27,147 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:10:27,147 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:10:27,147 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:10:27,147 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:10:27,148 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:10:27,148 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:10:27,148 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:10:27,149 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:10:27,149 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:10:27,150 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:10:27,150 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:10:27,150 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:10:27,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:10:27,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:10:27,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:10:27,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:10:27,152 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:10:27,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:10:27,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:10:27,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:10:27,153 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:10:27,153 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:10:27,153 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:10:27,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:10:27,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:10:27,154 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:10:27,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:10:27,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:10:27,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:10:27,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:10:27,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:10:27,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:10:27,156 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:10:27,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:10:27,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:10:27,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:10:27,157 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_9b3c4529-a673-4205-8f54-b95628f9798a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a1ab43e825ce385252e3e834bebdceddee5ecd9c5749af5b0b2355e44f90dcd [2021-10-29 05:10:27,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:10:27,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:10:27,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:10:27,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:10:27,465 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:10:27,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/memsafety/test-0019-1.i [2021-10-29 05:10:27,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/data/6bcb9a53d/0acdc07c51694c7587ad9a4e71b06a6f/FLAG2a78e7dfc [2021-10-29 05:10:28,110 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:10:28,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/sv-benchmarks/c/memsafety/test-0019-1.i [2021-10-29 05:10:28,124 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/data/6bcb9a53d/0acdc07c51694c7587ad9a4e71b06a6f/FLAG2a78e7dfc [2021-10-29 05:10:28,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/data/6bcb9a53d/0acdc07c51694c7587ad9a4e71b06a6f [2021-10-29 05:10:28,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:10:28,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:10:28,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:10:28,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:10:28,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:10:28,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:28,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650a74ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28, skipping insertion in model container [2021-10-29 05:10:28,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:28,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:10:28,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:10:28,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:10:28,800 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:10:28,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:10:28,883 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:10:28,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28 WrapperNode [2021-10-29 05:10:28,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:10:28,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:10:28,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:10:28,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:10:28,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:28,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:28,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:10:28,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:10:28,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:10:28,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:10:28,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:28,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:28,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:28,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:29,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:29,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:29,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:29,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:10:29,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:10:29,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:10:29,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:10:29,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (1/1) ... [2021-10-29 05:10:29,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:10:29,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:10:29,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:10:29,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:10:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:10:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 05:10:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:10:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 05:10:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:10:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:10:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:10:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:10:29,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:10:29,628 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:10:29,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:10:29 BoogieIcfgContainer [2021-10-29 05:10:29,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:10:29,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:10:29,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:10:29,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:10:29,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:10:28" (1/3) ... [2021-10-29 05:10:29,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40aa590d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:10:29, skipping insertion in model container [2021-10-29 05:10:29,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:10:28" (2/3) ... [2021-10-29 05:10:29,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40aa590d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:10:29, skipping insertion in model container [2021-10-29 05:10:29,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:10:29" (3/3) ... [2021-10-29 05:10:29,639 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-1.i [2021-10-29 05:10:29,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:10:29,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-10-29 05:10:29,697 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:10:29,704 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 05:10:29,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-10-29 05:10:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 41 states have internal predecessors, (42), 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 05:10:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-29 05:10:29,732 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:29,732 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-10-29 05:10:29,733 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2856, now seen corresponding path program 1 times [2021-10-29 05:10:29,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:29,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451232824] [2021-10-29 05:10:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:29,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:29,928 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 05:10:29,929 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:29,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451232824] [2021-10-29 05:10:29,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451232824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:29,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:29,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:10:29,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190193950] [2021-10-29 05:10:29,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:10:29,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:10:29,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:10:29,954 INFO L87 Difference]: Start difference. First operand has 42 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 41 states have internal predecessors, (42), 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 05:10:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:30,135 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-29 05:10:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:10:30,136 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 05:10:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:30,149 INFO L225 Difference]: With dead ends: 40 [2021-10-29 05:10:30,149 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 05:10:30,151 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 05:10:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 05:10:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 05:10:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 38 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) [2021-10-29 05:10:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-10-29 05:10:30,203 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 2 [2021-10-29 05:10:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:30,204 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-10-29 05:10:30,205 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 05:10:30,205 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-10-29 05:10:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-29 05:10:30,205 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:30,206 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-10-29 05:10:30,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:10:30,206 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2857, now seen corresponding path program 1 times [2021-10-29 05:10:30,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:30,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258488010] [2021-10-29 05:10:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:30,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:30,325 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 05:10:30,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:30,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258488010] [2021-10-29 05:10:30,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258488010] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:30,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:30,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:10:30,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385959420] [2021-10-29 05:10:30,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:10:30,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:30,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:10:30,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:10:30,333 INFO L87 Difference]: Start difference. First operand 39 states and 39 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 05:10:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:30,391 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-10-29 05:10:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:10:30,392 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 05:10:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:30,396 INFO L225 Difference]: With dead ends: 37 [2021-10-29 05:10:30,397 INFO L226 Difference]: Without dead ends: 37 [2021-10-29 05:10:30,397 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 05:10:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-29 05:10:30,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-29 05:10:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 36 states have internal predecessors, (37), 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 05:10:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-29 05:10:30,409 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 2 [2021-10-29 05:10:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:30,411 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-29 05:10:30,411 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 05:10:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-29 05:10:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:10:30,412 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:30,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:10:30,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:10:30,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:30,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2799282, now seen corresponding path program 1 times [2021-10-29 05:10:30,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:30,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947425228] [2021-10-29 05:10:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:30,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:30,531 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 05:10:30,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:30,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947425228] [2021-10-29 05:10:30,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947425228] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:30,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:30,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:10:30,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570654130] [2021-10-29 05:10:30,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:10:30,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:10:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:10:30,538 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:30,617 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-10-29 05:10:30,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:10:30,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 05:10:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:30,624 INFO L225 Difference]: With dead ends: 35 [2021-10-29 05:10:30,624 INFO L226 Difference]: Without dead ends: 35 [2021-10-29 05:10:30,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:10:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-29 05:10:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-29 05:10:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 34 states have internal predecessors, (35), 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 05:10:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-10-29 05:10:30,636 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 4 [2021-10-29 05:10:30,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:30,637 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-10-29 05:10:30,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:30,637 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-10-29 05:10:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:10:30,638 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:30,638 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:10:30,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:10:30,638 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2799283, now seen corresponding path program 1 times [2021-10-29 05:10:30,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:30,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587933237] [2021-10-29 05:10:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:30,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:30,790 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 05:10:30,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:30,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587933237] [2021-10-29 05:10:30,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587933237] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:30,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:30,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:10:30,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347224059] [2021-10-29 05:10:30,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:10:30,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:30,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:10:30,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:10:30,794 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:30,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:30,883 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-29 05:10:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:10:30,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 05:10:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:30,885 INFO L225 Difference]: With dead ends: 33 [2021-10-29 05:10:30,885 INFO L226 Difference]: Without dead ends: 33 [2021-10-29 05:10:30,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:10:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-29 05:10:30,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-29 05:10:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 32 states have internal predecessors, (33), 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 05:10:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-29 05:10:30,892 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 4 [2021-10-29 05:10:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:30,895 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-29 05:10:30,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:30,895 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-29 05:10:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:10:30,896 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:30,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:10:30,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:10:30,897 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1604856375, now seen corresponding path program 1 times [2021-10-29 05:10:30,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:30,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046218214] [2021-10-29 05:10:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:30,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:30,954 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 05:10:30,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:30,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046218214] [2021-10-29 05:10:30,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046218214] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:30,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:30,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:10:30,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739293335] [2021-10-29 05:10:30,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:10:30,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:30,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:10:30,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:10:30,958 INFO L87 Difference]: Start difference. First operand 33 states and 33 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) [2021-10-29 05:10:31,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:31,002 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-29 05:10:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:10:31,002 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 [2021-10-29 05:10:31,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:31,003 INFO L225 Difference]: With dead ends: 29 [2021-10-29 05:10:31,003 INFO L226 Difference]: Without dead ends: 29 [2021-10-29 05:10:31,003 INFO L786 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 [2021-10-29 05:10:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-29 05:10:31,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-29 05:10:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 28 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) [2021-10-29 05:10:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-29 05:10:31,009 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 6 [2021-10-29 05:10:31,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:31,010 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-29 05:10:31,010 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) [2021-10-29 05:10:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-29 05:10:31,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:10:31,010 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:31,011 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:10:31,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:10:31,011 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1604856374, now seen corresponding path program 1 times [2021-10-29 05:10:31,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:31,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580405074] [2021-10-29 05:10:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:31,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:31,094 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 05:10:31,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:31,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580405074] [2021-10-29 05:10:31,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580405074] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:31,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:31,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:10:31,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232494955] [2021-10-29 05:10:31,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:10:31,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:31,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:10:31,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:10:31,098 INFO L87 Difference]: Start difference. First operand 29 states and 29 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) [2021-10-29 05:10:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:31,122 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-29 05:10:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:10:31,123 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 [2021-10-29 05:10:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:31,124 INFO L225 Difference]: With dead ends: 25 [2021-10-29 05:10:31,124 INFO L226 Difference]: Without dead ends: 25 [2021-10-29 05:10:31,124 INFO L786 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 [2021-10-29 05:10:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-29 05:10:31,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-29 05:10:31,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 24 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) [2021-10-29 05:10:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-29 05:10:31,128 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 6 [2021-10-29 05:10:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:31,128 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-29 05:10:31,129 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) [2021-10-29 05:10:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-29 05:10:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:10:31,130 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:31,130 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:31,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:10:31,131 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash -857781170, now seen corresponding path program 1 times [2021-10-29 05:10:31,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:31,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910169317] [2021-10-29 05:10:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:31,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:31,345 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 05:10:31,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:31,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910169317] [2021-10-29 05:10:31,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910169317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:31,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:31,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:10:31,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700352184] [2021-10-29 05:10:31,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:10:31,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:10:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:10:31,352 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 05:10:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:31,576 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-29 05:10:31,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:10:31,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) Word has length 11 [2021-10-29 05:10:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:31,578 INFO L225 Difference]: With dead ends: 24 [2021-10-29 05:10:31,578 INFO L226 Difference]: Without dead ends: 24 [2021-10-29 05:10:31,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:10:31,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-29 05:10:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-29 05:10:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 23 states have internal predecessors, (24), 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 05:10:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-29 05:10:31,586 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 11 [2021-10-29 05:10:31,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:31,587 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-29 05:10:31,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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 05:10:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-29 05:10:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:10:31,588 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:31,588 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:31,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:10:31,588 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash -821413960, now seen corresponding path program 1 times [2021-10-29 05:10:31,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:31,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669184082] [2021-10-29 05:10:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:31,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:31,833 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 05:10:31,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:31,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669184082] [2021-10-29 05:10:31,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669184082] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:31,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:31,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-29 05:10:31,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416690797] [2021-10-29 05:10:31,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 05:10:31,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 05:10:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:10:31,837 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:32,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:32,071 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-10-29 05:10:32,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:10:32,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 05:10:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:32,073 INFO L225 Difference]: With dead ends: 24 [2021-10-29 05:10:32,073 INFO L226 Difference]: Without dead ends: 24 [2021-10-29 05:10:32,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:10:32,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-29 05:10:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-29 05:10:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 23 states have internal predecessors, (23), 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 05:10:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2021-10-29 05:10:32,076 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 12 [2021-10-29 05:10:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:32,077 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2021-10-29 05:10:32,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:32,077 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2021-10-29 05:10:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:10:32,078 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:32,078 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:32,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 05:10:32,078 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash -821412423, now seen corresponding path program 1 times [2021-10-29 05:10:32,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:32,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436041770] [2021-10-29 05:10:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:32,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:32,211 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 05:10:32,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:32,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436041770] [2021-10-29 05:10:32,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436041770] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:32,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:32,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:10:32,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319052835] [2021-10-29 05:10:32,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:10:32,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:32,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:10:32,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:10:32,215 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-29 05:10:32,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:32,436 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-29 05:10:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:10:32,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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 12 [2021-10-29 05:10:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:32,437 INFO L225 Difference]: With dead ends: 23 [2021-10-29 05:10:32,437 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:10:32,438 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:10:32,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:10:32,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-29 05:10:32,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 22 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) [2021-10-29 05:10:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-29 05:10:32,441 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 12 [2021-10-29 05:10:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:32,441 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-29 05:10:32,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-29 05:10:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-29 05:10:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:10:32,442 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:32,442 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:32,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 05:10:32,443 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:32,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash 306018736, now seen corresponding path program 1 times [2021-10-29 05:10:32,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:32,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265466568] [2021-10-29 05:10:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:32,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:32,652 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 05:10:32,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:32,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265466568] [2021-10-29 05:10:32,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265466568] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:32,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:32,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:10:32,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98737449] [2021-10-29 05:10:32,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:10:32,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:32,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:10:32,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:10:32,656 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:32,871 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-29 05:10:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:10:32,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 05:10:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:32,872 INFO L225 Difference]: With dead ends: 22 [2021-10-29 05:10:32,872 INFO L226 Difference]: Without dead ends: 22 [2021-10-29 05:10:32,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-29 05:10:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-29 05:10:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-29 05:10:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-10-29 05:10:32,874 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 13 [2021-10-29 05:10:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:32,874 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-10-29 05:10:32,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:10:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-10-29 05:10:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:10:32,875 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:32,875 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:32,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-29 05:10:32,875 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:32,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:32,875 INFO L85 PathProgramCache]: Analyzing trace with hash 896646299, now seen corresponding path program 1 times [2021-10-29 05:10:32,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:32,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424994180] [2021-10-29 05:10:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:32,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:32,998 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 05:10:32,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:32,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424994180] [2021-10-29 05:10:32,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424994180] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:32,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:32,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:10:32,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232516099] [2021-10-29 05:10:33,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:10:33,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:10:33,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:10:33,001 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 05:10:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:33,123 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-29 05:10:33,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:10:33,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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) Word has length 14 [2021-10-29 05:10:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:33,124 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:10:33,124 INFO L226 Difference]: Without dead ends: 21 [2021-10-29 05:10:33,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:10:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-29 05:10:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-29 05:10:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 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) [2021-10-29 05:10:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-10-29 05:10:33,127 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 14 [2021-10-29 05:10:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:33,127 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-10-29 05:10:33,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 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 05:10:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-10-29 05:10:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:10:33,128 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:33,128 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:33,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-29 05:10:33,129 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:33,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2026231570, now seen corresponding path program 1 times [2021-10-29 05:10:33,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:33,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420726734] [2021-10-29 05:10:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:33,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:33,231 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 05:10:33,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:33,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420726734] [2021-10-29 05:10:33,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420726734] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:33,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:33,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:10:33,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564234183] [2021-10-29 05:10:33,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:10:33,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:33,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:10:33,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:10:33,234 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-10-29 05:10:33,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:33,379 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-29 05:10:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:10:33,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) Word has length 15 [2021-10-29 05:10:33,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:33,381 INFO L225 Difference]: With dead ends: 20 [2021-10-29 05:10:33,381 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:10:33,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:10:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:10:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 05:10:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 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) [2021-10-29 05:10:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-29 05:10:33,384 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 15 [2021-10-29 05:10:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:33,384 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-29 05:10:33,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-10-29 05:10:33,385 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-29 05:10:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:10:33,386 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:33,386 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:33,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-29 05:10:33,386 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1611330691, now seen corresponding path program 1 times [2021-10-29 05:10:33,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:33,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637234771] [2021-10-29 05:10:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:33,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:33,593 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 05:10:33,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:33,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637234771] [2021-10-29 05:10:33,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637234771] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:33,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:33,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-29 05:10:33,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475732533] [2021-10-29 05:10:33,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:10:33,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:33,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:10:33,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:10:33,595 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-29 05:10:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:33,834 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-29 05:10:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:10:33,835 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) Word has length 16 [2021-10-29 05:10:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:33,836 INFO L225 Difference]: With dead ends: 19 [2021-10-29 05:10:33,836 INFO L226 Difference]: Without dead ends: 19 [2021-10-29 05:10:33,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:10:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-29 05:10:33,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-29 05:10:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0) 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 05:10:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-29 05:10:33,838 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 16 [2021-10-29 05:10:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:33,839 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-29 05:10:33,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-29 05:10:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-29 05:10:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:10:33,840 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:10:33,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:33,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-29 05:10:33,841 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-10-29 05:10:33,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:10:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1994402400, now seen corresponding path program 1 times [2021-10-29 05:10:33,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:10:33,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618470864] [2021-10-29 05:10:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:10:33,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:10:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:10:35,331 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 05:10:35,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:10:35,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618470864] [2021-10-29 05:10:35,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618470864] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:10:35,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:10:35,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-29 05:10:35,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195753803] [2021-10-29 05:10:35,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-29 05:10:35,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:10:35,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-29 05:10:35,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-10-29 05:10:35,333 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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 05:10:37,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:10:37,528 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-29 05:10:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-29 05:10:37,528 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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) Word has length 18 [2021-10-29 05:10:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:10:37,529 INFO L225 Difference]: With dead ends: 18 [2021-10-29 05:10:37,529 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:10:37,530 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2021-10-29 05:10:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:10:37,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:10:37,530 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 05:10:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:10:37,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-29 05:10:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:10:37,531 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:10:37,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 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 05:10:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:10:37,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:10:37,534 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:10:37,534 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:10:37,534 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-29 05:10:37,535 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-29 05:10:37,535 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-29 05:10:37,535 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 05:10:37,535 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-29 05:10:37,535 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-29 05:10:37,536 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-29 05:10:37,536 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-29 05:10:37,536 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-29 05:10:37,536 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-29 05:10:37,536 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-29 05:10:37,537 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-29 05:10:37,537 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-29 05:10:37,537 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-29 05:10:37,537 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:10:37,537 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:10:37,538 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:10:37,538 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:10:37,538 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:10:37,538 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:10:37,538 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:10:37,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-29 05:10:37,542 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:10:37,543 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:10:37,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:10:37 BoogieIcfgContainer [2021-10-29 05:10:37,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:10:37,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:10:37,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:10:37,547 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:10:37,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:10:29" (3/4) ... [2021-10-29 05:10:37,550 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:10:37,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-10-29 05:10:37,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 05:10:37,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 05:10:37,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:10:37,593 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:10:37,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:10:37,595 INFO L168 Benchmark]: Toolchain (without parser) took 9174.35 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 89.6 MB in the beginning and 79.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:37,595 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory is still 72.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:10:37,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.49 ms. Allocated memory is still 119.5 MB. Free memory was 89.3 MB in the beginning and 89.0 MB in the end (delta: 346.8 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:37,596 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.29 ms. Allocated memory is still 119.5 MB. Free memory was 89.0 MB in the beginning and 87.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:37,597 INFO L168 Benchmark]: Boogie Preprocessor took 45.96 ms. Allocated memory is still 119.5 MB. Free memory was 86.9 MB in the beginning and 85.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:10:37,597 INFO L168 Benchmark]: RCFGBuilder took 616.31 ms. Allocated memory is still 119.5 MB. Free memory was 85.7 MB in the beginning and 69.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:37,598 INFO L168 Benchmark]: TraceAbstraction took 7912.90 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 69.3 MB in the beginning and 81.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:10:37,598 INFO L168 Benchmark]: Witness Printer took 47.55 ms. Allocated memory is still 174.1 MB. Free memory was 81.1 MB in the beginning and 79.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:10:37,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory is still 72.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 461.49 ms. Allocated memory is still 119.5 MB. Free memory was 89.3 MB in the beginning and 89.0 MB in the end (delta: 346.8 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.29 ms. Allocated memory is still 119.5 MB. Free memory was 89.0 MB in the beginning and 87.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.96 ms. Allocated memory is still 119.5 MB. Free memory was 86.9 MB in the beginning and 85.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 616.31 ms. Allocated memory is still 119.5 MB. Free memory was 85.7 MB in the beginning and 69.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7912.90 ms. Allocated memory was 119.5 MB in the beginning and 174.1 MB in the end (delta: 54.5 MB). Free memory was 69.3 MB in the beginning and 81.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. * Witness Printer took 47.55 ms. Allocated memory is still 174.1 MB. Free memory was 81.1 MB in the beginning and 79.1 MB in the end (delta: 2.1 MB). There was no memory consumed. 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: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 529]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: 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: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 538]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 539]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 541]: 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, 42 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 172 SDtfs, 535 SDslu, 162 SDs, 0 SdLazy, 874 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 113, 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, 14 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 1823 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 23 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 05:10:37,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b3c4529-a673-4205-8f54-b95628f9798a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...