./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/realloc1.c --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_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/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_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/realloc1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/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_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/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 ac04f74b68086890b55eca7e645e90e8df8a67932fce57d15e9ba2378d355360 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:25:21,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:25:21,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:25:21,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:25:21,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:25:21,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:25:21,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:25:21,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:25:21,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:25:21,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:25:21,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:25:21,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:25:21,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:25:21,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:25:21,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:25:21,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:25:21,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:25:21,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:25:21,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:25:21,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:25:21,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:25:21,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:25:21,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:25:21,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:25:21,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:25:21,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:25:21,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:25:21,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:25:21,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:25:21,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:25:21,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:25:21,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:25:21,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:25:21,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:25:21,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:25:21,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:25:21,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:25:21,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:25:21,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:25:21,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:25:21,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:25:21,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:25:21,194 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:25:21,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:25:21,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:25:21,196 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:25:21,196 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:25:21,203 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:25:21,203 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:25:21,203 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:25:21,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:25:21,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:25:21,205 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:25:21,205 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:25:21,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:25:21,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:25:21,206 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:25:21,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:25:21,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:25:21,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:25:21,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:25:21,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:25:21,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:25:21,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:25:21,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:25:21,208 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:25:21,208 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:25:21,209 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:25:21,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:25:21,210 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:25:21,211 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:25:21,211 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:25:21,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:25:21,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:25:21,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:25:21,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:25:21,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:25:21,212 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:25:21,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:25:21,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:25:21,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:25:21,213 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_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac04f74b68086890b55eca7e645e90e8df8a67932fce57d15e9ba2378d355360 [2021-10-29 05:25:21,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:25:21,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:25:21,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:25:21,498 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:25:21,499 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:25:21,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/memsafety-ext3/realloc1.c [2021-10-29 05:25:21,569 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/data/4e0a40f1a/e183469a288c4f55be2b49a3f54e1722/FLAG2f0453bb9 [2021-10-29 05:25:22,023 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:25:22,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/sv-benchmarks/c/memsafety-ext3/realloc1.c [2021-10-29 05:25:22,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/data/4e0a40f1a/e183469a288c4f55be2b49a3f54e1722/FLAG2f0453bb9 [2021-10-29 05:25:22,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/data/4e0a40f1a/e183469a288c4f55be2b49a3f54e1722 [2021-10-29 05:25:22,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:25:22,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:25:22,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:25:22,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:25:22,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:25:22,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24be1643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22, skipping insertion in model container [2021-10-29 05:25:22,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:25:22,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:25:22,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:25:22,582 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:25:22,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:25:22,619 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:25:22,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22 WrapperNode [2021-10-29 05:25:22,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:25:22,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:25:22,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:25:22,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:25:22,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:25:22,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:25:22,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:25:22,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:25:22,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:25:22,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:25:22,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:25:22,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:25:22,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (1/1) ... [2021-10-29 05:25:22,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:25:22,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:25:22,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:25:22,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:25:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:25:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:25:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:25:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:25:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:25:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:25:23,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:25:23,236 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 05:25:23,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:25:23 BoogieIcfgContainer [2021-10-29 05:25:23,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:25:23,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:25:23,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:25:23,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:25:23,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:25:22" (1/3) ... [2021-10-29 05:25:23,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48af65ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:25:23, skipping insertion in model container [2021-10-29 05:25:23,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:25:22" (2/3) ... [2021-10-29 05:25:23,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48af65ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:25:23, skipping insertion in model container [2021-10-29 05:25:23,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:25:23" (3/3) ... [2021-10-29 05:25:23,260 INFO L111 eAbstractionObserver]: Analyzing ICFG realloc1.c [2021-10-29 05:25:23,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:25:23,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-29 05:25:23,331 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:25:23,338 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 05:25:23,338 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-29 05:25:23,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 8 states have (on average 2.125) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:23,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:25:23,357 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:23,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:25:23,358 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-10-29 05:25:23,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash 78481, now seen corresponding path program 1 times [2021-10-29 05:25:23,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:23,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896211229] [2021-10-29 05:25:23,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:23,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:23,514 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 05:25:23,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:23,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896211229] [2021-10-29 05:25:23,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896211229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:23,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:23,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:25:23,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419147750] [2021-10-29 05:25:23,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:25:23,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:25:23,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:25:23,540 INFO L87 Difference]: Start difference. First operand has 17 states, 8 states have (on average 2.125) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 05:25:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:23,566 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-29 05:25:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:25:23,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-29 05:25:23,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:23,575 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:25:23,576 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:25:23,577 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 05:25:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:25:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-10-29 05:25:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-29 05:25:23,606 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 3 [2021-10-29 05:25:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:23,606 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-29 05:25:23,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 05:25:23,607 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-29 05:25:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:25:23,607 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:23,607 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:25:23,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:25:23,608 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-10-29 05:25:23,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash 77202, now seen corresponding path program 1 times [2021-10-29 05:25:23,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:23,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358594276] [2021-10-29 05:25:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:23,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:23,639 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 05:25:23,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:23,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358594276] [2021-10-29 05:25:23,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358594276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:23,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:23,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:25:23,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457384111] [2021-10-29 05:25:23,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:25:23,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:25:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:25:23,644 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 05:25:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:23,662 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-29 05:25:23,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:25:23,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-29 05:25:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:23,663 INFO L225 Difference]: With dead ends: 15 [2021-10-29 05:25:23,663 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:25:23,664 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 05:25:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:25:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 05:25:23,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 14 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 05:25:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-29 05:25:23,667 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2021-10-29 05:25:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:23,668 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-29 05:25:23,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 05:25:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-29 05:25:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:25:23,669 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:23,669 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:25:23,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:25:23,669 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-10-29 05:25:23,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:23,670 INFO L85 PathProgramCache]: Analyzing trace with hash 77203, now seen corresponding path program 1 times [2021-10-29 05:25:23,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:23,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104402079] [2021-10-29 05:25:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:23,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:23,727 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 05:25:23,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:23,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104402079] [2021-10-29 05:25:23,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104402079] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:23,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:23,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:25:23,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495073102] [2021-10-29 05:25:23,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:25:23,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:23,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:25:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:25:23,736 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 05:25:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:23,767 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-29 05:25:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:25:23,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-29 05:25:23,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:23,769 INFO L225 Difference]: With dead ends: 16 [2021-10-29 05:25:23,770 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 05:25:23,771 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 05:25:23,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 05:25:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-29 05:25:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 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 05:25:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-29 05:25:23,777 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2021-10-29 05:25:23,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:23,777 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-29 05:25:23,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 05:25:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-29 05:25:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:25:23,779 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:23,780 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:25:23,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:25:23,781 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-10-29 05:25:23,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:23,782 INFO L85 PathProgramCache]: Analyzing trace with hash 74227319, now seen corresponding path program 1 times [2021-10-29 05:25:23,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:23,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096325243] [2021-10-29 05:25:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:23,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 05:25:23,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:23,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096325243] [2021-10-29 05:25:23,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096325243] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:23,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:23,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:25:23,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711284976] [2021-10-29 05:25:23,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:25:23,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:23,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:25:23,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:25:23,841 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:23,876 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-29 05:25:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:25:23,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-29 05:25:23,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:23,879 INFO L225 Difference]: With dead ends: 15 [2021-10-29 05:25:23,879 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:25:23,879 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 05:25:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:25:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 05:25:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 14 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 05:25:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-29 05:25:23,885 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2021-10-29 05:25:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:23,885 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-29 05:25:23,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:23,887 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-29 05:25:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:25:23,888 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:23,888 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-29 05:25:23,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:25:23,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-10-29 05:25:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash 74226041, now seen corresponding path program 1 times [2021-10-29 05:25:23,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:23,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675781857] [2021-10-29 05:25:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:23,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:24,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:24,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675781857] [2021-10-29 05:25:24,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675781857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:24,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:24,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:25:24,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746976018] [2021-10-29 05:25:24,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:25:24,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:24,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:25:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:24,053 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:24,099 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-29 05:25:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:25:24,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-29 05:25:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:24,100 INFO L225 Difference]: With dead ends: 13 [2021-10-29 05:25:24,100 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 05:25:24,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:25:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 05:25:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-29 05:25:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 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 05:25:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-29 05:25:24,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-10-29 05:25:24,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:24,106 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-29 05:25:24,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-29 05:25:24,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:25:24,107 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:24,107 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:25:24,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:25:24,109 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-10-29 05:25:24,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:24,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1993920354, now seen corresponding path program 1 times [2021-10-29 05:25:24,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:24,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277737369] [2021-10-29 05:25:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:24,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 05:25:24,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:24,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277737369] [2021-10-29 05:25:24,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277737369] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:24,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:24,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:25:24,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545084120] [2021-10-29 05:25:24,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:25:24,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:24,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:25:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:25:24,168 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:25:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:24,179 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-29 05:25:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:25:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:25:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:24,182 INFO L225 Difference]: With dead ends: 11 [2021-10-29 05:25:24,182 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 05:25:24,183 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 05:25:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 05:25:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 05:25:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-29 05:25:24,187 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-10-29 05:25:24,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:24,187 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-29 05:25:24,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 05:25:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-29 05:25:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:25:24,188 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:24,189 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:24,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:25:24,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-10-29 05:25:24,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash -602044415, now seen corresponding path program 1 times [2021-10-29 05:25:24,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:24,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510596068] [2021-10-29 05:25:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:24,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:24,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:24,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510596068] [2021-10-29 05:25:24,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510596068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:25:24,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690568990] [2021-10-29 05:25:24,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:24,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:25:24,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:25:24,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:25:24,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:25:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:24,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:25:24,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:24,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:24,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690568990] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:25:24,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [828927168] [2021-10-29 05:25:24,447 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 05:25:24,448 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:25:24,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:25:24,470 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:25:24,470 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:25:24,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,534 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:25:24,540 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-29 05:25:24,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 05:25:24,569 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_33|], 3=[|v_#valid_46|]} [2021-10-29 05:25:24,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:25:24,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:24,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:24,589 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:24,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:24,617 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:25:24,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2021-10-29 05:25:24,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:25:24,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:25:24,635 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:24,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:24,652 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:25:24,656 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:24,657 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:48 [2021-10-29 05:25:24,673 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.7 percent of original size [2021-10-29 05:25:24,688 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,689 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-29 05:25:24,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:25:24,692 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:25:24,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-29 05:25:24,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-29 05:25:24,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:24,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:24,712 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:24,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:24,738 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-29 05:25:24,746 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:24,746 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:84, output treesize:84 [2021-10-29 05:25:24,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:24,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:24,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:24,855 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.1 percent of original size [2021-10-29 05:25:24,871 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,880 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,893 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-29 05:25:24,898 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-29 05:25:24,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-29 05:25:24,908 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-10-29 05:25:24,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-29 05:25:24,924 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,930 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,932 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-29 05:25:24,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:25:24,937 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:25:24,948 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,950 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-10-29 05:25:24,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-10-29 05:25:24,954 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,957 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:25:24,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:25:24,961 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-29 05:25:24,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-10-29 05:25:24,975 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:24,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:24,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-29 05:25:24,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-10-29 05:25:25,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-29 05:25:25,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:25,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:25,014 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:25:25,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2021-10-29 05:25:25,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:25:25,063 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:25:25,064 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,093 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,103 INFO L180 QuantifierPusher]: treesize reduction 66, result has 73.2 percent of original size [2021-10-29 05:25:25,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-10-29 05:25:25,113 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:25:25,114 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:253, output treesize:187 [2021-10-29 05:25:25,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,174 INFO L180 QuantifierPusher]: treesize reduction 18, result has 77.2 percent of original size [2021-10-29 05:25:25,184 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,185 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-29 05:25:25,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:25:25,188 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:25:25,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:25:25,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-29 05:25:25,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:25,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:25,203 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 05:25:25,209 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,210 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:55, output treesize:55 [2021-10-29 05:25:25,221 INFO L180 QuantifierPusher]: treesize reduction 18, result has 77.2 percent of original size [2021-10-29 05:25:25,234 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,235 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-29 05:25:25,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:25:25,239 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:25:25,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:25:25,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-29 05:25:25,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:25,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:25,251 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,254 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 05:25:25,260 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,260 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:55, output treesize:55 [2021-10-29 05:25:25,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,327 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,332 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,335 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,336 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:25:25,337 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-29 05:25:25,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-29 05:25:25,341 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-29 05:25:25,350 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,353 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:25:25,358 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-29 05:25:25,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-29 05:25:25,361 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,366 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-29 05:25:25,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-29 05:25:25,370 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:25,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-29 05:25:25,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-10-29 05:25:25,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-10-29 05:25:25,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:25,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:25,414 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,423 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:25:25,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,425 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:25:25,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,447 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,456 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:25:25,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,458 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,464 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:25:25,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,466 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:25:25,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2021-10-29 05:25:25,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:25,480 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:25,483 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:25,485 INFO L180 QuantifierPusher]: treesize reduction 22, result has 72.5 percent of original size [2021-10-29 05:25:25,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 05:25:25,486 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:25,487 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:530, output treesize:58 [2021-10-29 05:25:25,489 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:25:25,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:25:25,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:25:25,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-10-29 05:25:25,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316869211] [2021-10-29 05:25:25,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:25:25,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:25:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:25:25,951 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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 05:25:25,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:25,970 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-29 05:25:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:25:25,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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 8 [2021-10-29 05:25:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:25,971 INFO L225 Difference]: With dead ends: 17 [2021-10-29 05:25:25,971 INFO L226 Difference]: Without dead ends: 17 [2021-10-29 05:25:25,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:25:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-29 05:25:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-29 05:25:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-29 05:25:25,974 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2021-10-29 05:25:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:25,974 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-29 05:25:25,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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 05:25:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-29 05:25:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:25:25,975 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:25,975 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:26,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:26,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-29 05:25:26,194 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-10-29 05:25:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:26,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1592477681, now seen corresponding path program 2 times [2021-10-29 05:25:26,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:26,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954221449] [2021-10-29 05:25:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:26,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:26,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:25:26,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954221449] [2021-10-29 05:25:26,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954221449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:25:26,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058920182] [2021-10-29 05:25:26,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:25:26,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:25:26,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:25:26,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:25:26,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:25:26,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-29 05:25:26,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:25:26,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:25:26,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:26,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:26,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058920182] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:25:26,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [379398062] [2021-10-29 05:25:26,493 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-29 05:25:26,493 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:25:26,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:25:26,494 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:25:26,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:25:26,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,501 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:25:26,505 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-29 05:25:26,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 05:25:26,515 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_34|], 3=[|v_#valid_49|]} [2021-10-29 05:25:26,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-29 05:25:26,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:26,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:26,521 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,525 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:25:26,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2021-10-29 05:25:26,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:25:26,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:25:26,537 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:25:26,550 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,550 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:52, output treesize:48 [2021-10-29 05:25:26,556 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.7 percent of original size [2021-10-29 05:25:26,565 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,567 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:25:26,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:25:26,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:25:26,571 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.2 percent of original size 76 [2021-10-29 05:25:26,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-29 05:25:26,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 05:25:26,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-10-29 05:25:26,581 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,584 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,585 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-10-29 05:25:26,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 05:25:26,588 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,588 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:77, output treesize:71 [2021-10-29 05:25:26,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,620 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.1 percent of original size [2021-10-29 05:25:26,633 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,636 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,639 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 05:25:26,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:25:26,641 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,642 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:25:26,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:25:26,645 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-29 05:25:26,648 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,649 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-29 05:25:26,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:25:26,650 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:25:26,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-29 05:25:26,656 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-10-29 05:25:26,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-10-29 05:25:26,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:25:26,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-10-29 05:25:26,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-29 05:25:26,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-29 05:25:26,679 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-29 05:25:26,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:26,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:26,689 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,701 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,710 INFO L180 QuantifierPusher]: treesize reduction 52, result has 77.7 percent of original size [2021-10-29 05:25:26,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-10-29 05:25:26,714 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:25:26,714 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:240, output treesize:188 [2021-10-29 05:25:26,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,749 INFO L180 QuantifierPusher]: treesize reduction 18, result has 77.2 percent of original size [2021-10-29 05:25:26,755 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,757 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-29 05:25:26,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:25:26,758 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,759 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:25:26,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:25:26,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-29 05:25:26,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:26,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:26,768 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,770 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 05:25:26,773 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,773 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:55, output treesize:55 [2021-10-29 05:25:26,777 INFO L180 QuantifierPusher]: treesize reduction 18, result has 77.2 percent of original size [2021-10-29 05:25:26,781 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,782 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-29 05:25:26,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:25:26,783 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:25:26,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:25:26,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-29 05:25:26,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:26,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 05:25:26,793 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,795 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-29 05:25:26,797 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,797 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:55, output treesize:55 [2021-10-29 05:25:26,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,863 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,868 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,870 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-29 05:25:26,882 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:25:26,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-29 05:25:26,888 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-29 05:25:26,894 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,895 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,896 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-29 05:25:26,899 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:25:26,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-29 05:25:26,901 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-29 05:25:26,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-29 05:25:26,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:25:26,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-29 05:25:26,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-10-29 05:25:26,924 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:25:26,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:26,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:26,926 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,931 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:25:26,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:26,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:26,933 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-10-29 05:25:26,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:26,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:26,947 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-10-29 05:25:26,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:26,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:25:26,959 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:25:26,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:26,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:26,966 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,971 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:25:26,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:26,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:25:26,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:25:26,973 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:25:26,979 INFO L628 ElimStorePlain]: treesize reduction 84, result has 48.8 percent of original size [2021-10-29 05:25:26,981 INFO L180 QuantifierPusher]: treesize reduction 22, result has 72.5 percent of original size [2021-10-29 05:25:26,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 05:25:26,982 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:25:26,982 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:530, output treesize:58 [2021-10-29 05:25:26,984 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:25:27,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:25:27,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:25:27,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-10-29 05:25:27,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643588944] [2021-10-29 05:25:27,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:25:27,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:25:27,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:25:27,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-10-29 05:25:27,426 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 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 05:25:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:27,464 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-29 05:25:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:25:27,465 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 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) Word has length 14 [2021-10-29 05:25:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:27,465 INFO L225 Difference]: With dead ends: 29 [2021-10-29 05:25:27,465 INFO L226 Difference]: Without dead ends: 29 [2021-10-29 05:25:27,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-10-29 05:25:27,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-29 05:25:27,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-29 05:25:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.0740740740740742) 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 05:25:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-29 05:25:27,469 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 14 [2021-10-29 05:25:27,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:27,469 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-29 05:25:27,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 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 05:25:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-29 05:25:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 05:25:27,470 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:27,470 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:27,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:27,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:25:27,693 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 5 more)] === [2021-10-29 05:25:27,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1196994731, now seen corresponding path program 3 times [2021-10-29 05:25:27,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:25:27,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719312923] [2021-10-29 05:25:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:27,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:25:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:25:27,733 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:25:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:25:27,800 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:25:27,800 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:25:27,802 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-29 05:25:27,804 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:25:27,804 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:25:27,804 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:25:27,804 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:25:27,805 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:25:27,805 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-29 05:25:27,805 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:25:27,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-10-29 05:25:27,808 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:27,812 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:25:27,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:25:27 BoogieIcfgContainer [2021-10-29 05:25:27,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:25:27,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:25:27,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:25:27,836 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:25:27,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:25:23" (3/4) ... [2021-10-29 05:25:27,838 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:25:27,910 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:25:27,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:25:27,911 INFO L168 Benchmark]: Toolchain (without parser) took 5518.12 ms. Allocated memory was 115.3 MB in the beginning and 140.5 MB in the end (delta: 25.2 MB). Free memory was 77.3 MB in the beginning and 45.6 MB in the end (delta: 31.8 MB). Peak memory consumption was 56.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:27,912 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 115.3 MB. Free memory is still 93.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:25:27,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.83 ms. Allocated memory is still 115.3 MB. Free memory was 77.1 MB in the beginning and 90.9 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:27,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.49 ms. Allocated memory is still 115.3 MB. Free memory was 90.4 MB in the beginning and 89.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:25:27,913 INFO L168 Benchmark]: Boogie Preprocessor took 22.65 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 88.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:25:27,913 INFO L168 Benchmark]: RCFGBuilder took 548.48 ms. Allocated memory is still 115.3 MB. Free memory was 88.2 MB in the beginning and 73.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:27,918 INFO L168 Benchmark]: TraceAbstraction took 4595.84 ms. Allocated memory was 115.3 MB in the beginning and 140.5 MB in the end (delta: 25.2 MB). Free memory was 72.6 MB in the beginning and 47.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:27,919 INFO L168 Benchmark]: Witness Printer took 74.55 ms. Allocated memory is still 140.5 MB. Free memory was 47.7 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:27,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 115.3 MB. Free memory is still 93.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.83 ms. Allocated memory is still 115.3 MB. Free memory was 77.1 MB in the beginning and 90.9 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.49 ms. Allocated memory is still 115.3 MB. Free memory was 90.4 MB in the beginning and 89.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.65 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 88.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 548.48 ms. Allocated memory is still 115.3 MB. Free memory was 88.2 MB in the beginning and 73.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4595.84 ms. Allocated memory was 115.3 MB in the beginning and 140.5 MB in the end (delta: 25.2 MB). Free memory was 72.6 MB in the beginning and 47.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. * Witness Printer took 74.55 ms. Allocated memory is still 140.5 MB. Free memory was 47.7 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L8] char* p = malloc(10 * sizeof(int)); [L10] int i = 0; [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND TRUE i < 10 [L11] p[i] = __VERIFIER_nondet_char() [L10] i++ [L10] COND FALSE !(i < 10) [L14] free(p) [L14] free(p) [L14] free(p) [L16] p[2] - UnprovableResult [Line: 11]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 11]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 16]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 7]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 9, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 50 SDslu, 38 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=8, InterpolantAutomatonStates: 38, 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, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 4/55 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:25:27,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bc04854-3e9e-4dbb-ad08-d378e3367d4a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...