./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0edc3db25587eb2dcb44164977e2a8fa1ed85700 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-12 23:59:15,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:15,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:15,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-12 23:59:15,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-12 23:59:15,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-12 23:59:15,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-12 23:59:15,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-12 23:59:15,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-12 23:59:15,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-12 23:59:15,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-12 23:59:15,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-12 23:59:15,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-12 23:59:15,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-12 23:59:15,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-12 23:59:15,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-12 23:59:15,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-12 23:59:15,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-12 23:59:15,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-12 23:59:15,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-12 23:59:15,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-12 23:59:15,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-12 23:59:15,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-12 23:59:15,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-12 23:59:15,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-12 23:59:15,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-12 23:59:15,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-12 23:59:15,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-12 23:59:15,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-12 23:59:15,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-12 23:59:15,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:15,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:15,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:15,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:15,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:15,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:15,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:15,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:15,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:15,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:15,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:15,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-12 23:59:15,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:15,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:15,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:15,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:15,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:15,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:15,843 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:15,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:15,843 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-12 23:59:15,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-12 23:59:15,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-12 23:59:15,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:15,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-12 23:59:15,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-12 23:59:15,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-12 23:59:15,846 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-12 23:59:15,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-12 23:59:15,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:15,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-12 23:59:15,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:15,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:15,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-12 23:59:15,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:15,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:15,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-12 23:59:15,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-12 23:59:15,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-12 23:59:15,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-12 23:59:15,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-12 23:59:15,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:15,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0edc3db25587eb2dcb44164977e2a8fa1ed85700 [2021-10-12 23:59:16,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:16,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:16,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:16,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:16,193 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:16,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loop-acceleration/array_1-2.c [2021-10-12 23:59:16,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/data/51bbc11b7/7a400ae58e6e488a9d389fa95b766544/FLAG017bd6d5e [2021-10-12 23:59:16,692 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:16,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/sv-benchmarks/c/loop-acceleration/array_1-2.c [2021-10-12 23:59:16,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/data/51bbc11b7/7a400ae58e6e488a9d389fa95b766544/FLAG017bd6d5e [2021-10-12 23:59:17,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/data/51bbc11b7/7a400ae58e6e488a9d389fa95b766544 [2021-10-12 23:59:17,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:17,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-12 23:59:17,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:17,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:17,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:17,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171c217f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17, skipping insertion in model container [2021-10-12 23:59:17,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:17,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:17,293 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/sv-benchmarks/c/loop-acceleration/array_1-2.c[321,334] [2021-10-12 23:59:17,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:17,316 INFO L203 MainTranslator]: Completed pre-run [2021-10-12 23:59:17,328 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/sv-benchmarks/c/loop-acceleration/array_1-2.c[321,334] [2021-10-12 23:59:17,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:17,345 INFO L208 MainTranslator]: Completed translation [2021-10-12 23:59:17,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17 WrapperNode [2021-10-12 23:59:17,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:17,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:17,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-12 23:59:17,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-12 23:59:17,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:17,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-12 23:59:17,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-12 23:59:17,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-12 23:59:17,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-12 23:59:17,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-12 23:59:17,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-12 23:59:17,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-12 23:59:17,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:17,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:17,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:17,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-12 23:59:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-12 23:59:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-12 23:59:17,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-12 23:59:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-12 23:59:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-12 23:59:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-12 23:59:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-12 23:59:17,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-12 23:59:17,661 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-12 23:59:17,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:17 BoogieIcfgContainer [2021-10-12 23:59:17,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-12 23:59:17,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-12 23:59:17,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-12 23:59:17,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-12 23:59:17,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:17" (1/3) ... [2021-10-12 23:59:17,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d01bb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:17, skipping insertion in model container [2021-10-12 23:59:17,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (2/3) ... [2021-10-12 23:59:17,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d01bb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:17, skipping insertion in model container [2021-10-12 23:59:17,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:17" (3/3) ... [2021-10-12 23:59:17,673 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2021-10-12 23:59:17,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-12 23:59:17,679 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-12 23:59:17,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-12 23:59:17,734 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-12 23:59:17,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-12 23:59:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-12 23:59:17,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:17,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-12 23:59:17,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:17,760 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-10-12 23:59:17,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:17,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690708947] [2021-10-12 23:59:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:17,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:17,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:17,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690708947] [2021-10-12 23:59:17,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690708947] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:17,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:17,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-12 23:59:17,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540768872] [2021-10-12 23:59:17,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-12 23:59:17,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:17,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-12 23:59:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-12 23:59:17,951 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:17,974 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-12 23:59:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-12 23:59:17,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-12 23:59:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:17,984 INFO L225 Difference]: With dead ends: 22 [2021-10-12 23:59:17,984 INFO L226 Difference]: Without dead ends: 10 [2021-10-12 23:59:17,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-12 23:59:18,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-12 23:59:18,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-12 23:59:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-12 23:59:18,018 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-12 23:59:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:18,018 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-12 23:59:18,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-12 23:59:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-12 23:59:18,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:18,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:18,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-12 23:59:18,021 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:18,022 INFO L82 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-10-12 23:59:18,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:18,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679251882] [2021-10-12 23:59:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:18,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:18,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:18,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679251882] [2021-10-12 23:59:18,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679251882] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:18,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916928954] [2021-10-12 23:59:18,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:18,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:18,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:18,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:18,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-12 23:59:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:18,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-12 23:59:18,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:18,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916928954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:18,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:18,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-12 23:59:18,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845374621] [2021-10-12 23:59:18,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-12 23:59:18,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:18,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-12 23:59:18,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:18,268 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-12 23:59:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:18,298 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-12 23:59:18,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-12 23:59:18,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-12 23:59:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:18,299 INFO L225 Difference]: With dead ends: 16 [2021-10-12 23:59:18,300 INFO L226 Difference]: Without dead ends: 12 [2021-10-12 23:59:18,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-12 23:59:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-12 23:59:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) 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) [2021-10-12 23:59:18,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-12 23:59:18,304 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-10-12 23:59:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:18,304 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-12 23:59:18,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-12 23:59:18,305 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-12 23:59:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-12 23:59:18,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:18,306 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:18,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:18,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:18,530 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:18,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:18,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 2 times [2021-10-12 23:59:18,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:18,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014843794] [2021-10-12 23:59:18,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:18,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:18,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:18,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014843794] [2021-10-12 23:59:18,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014843794] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:18,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59191689] [2021-10-12 23:59:18,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-12 23:59:18,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:18,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:18,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:18,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-12 23:59:18,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-12 23:59:18,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:18,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-12 23:59:18,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:18,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59191689] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:18,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:18,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-12 23:59:18,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824763844] [2021-10-12 23:59:18,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-12 23:59:18,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-12 23:59:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-12 23:59:18,759 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:18,792 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-12 23:59:18,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-12 23:59:18,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-12 23:59:18,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:18,794 INFO L225 Difference]: With dead ends: 18 [2021-10-12 23:59:18,795 INFO L226 Difference]: Without dead ends: 14 [2021-10-12 23:59:18,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-12 23:59:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-12 23:59:18,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-12 23:59:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-12 23:59:18,801 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2021-10-12 23:59:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:18,802 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-12 23:59:18,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,803 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-12 23:59:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-12 23:59:18,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:18,804 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:18,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:19,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:19,026 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:19,027 INFO L82 PathProgramCache]: Analyzing trace with hash 833881267, now seen corresponding path program 3 times [2021-10-12 23:59:19,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:19,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785764830] [2021-10-12 23:59:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:19,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:19,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:19,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785764830] [2021-10-12 23:59:19,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785764830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:19,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847599822] [2021-10-12 23:59:19,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-12 23:59:19,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:19,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:19,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:19,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-12 23:59:19,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-12 23:59:19,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:19,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-12 23:59:19,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:19,358 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 15 treesize of output 11 [2021-10-12 23:59:19,633 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-10-12 23:59:19,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2021-10-12 23:59:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-12 23:59:19,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847599822] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:19,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-12 23:59:19,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-10-12 23:59:19,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317838622] [2021-10-12 23:59:19,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-12 23:59:19,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:19,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-12 23:59:19,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:19,696 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:21,781 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-12 23:59:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-12 23:59:21,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-12 23:59:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:21,782 INFO L225 Difference]: With dead ends: 13 [2021-10-12 23:59:21,782 INFO L226 Difference]: Without dead ends: 0 [2021-10-12 23:59:21,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-12 23:59:21,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-12 23:59:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-12 23:59:21,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-12 23:59:21,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-12 23:59:21,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:21,784 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-12 23:59:21,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-12 23:59:21,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-12 23:59:21,787 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-12 23:59:21,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:21,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:21,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-12 23:59:21,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-12 23:59:21,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-12 23:59:22,012 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-12 23:59:22,013 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-12 23:59:22,013 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-12 23:59:22,013 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-12 23:59:22,013 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-12 23:59:22,013 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-10-12 23:59:22,014 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2021-10-12 23:59:22,014 INFO L853 garLoopResultBuilder]: At program point L16-3(lines 16 18) the Hoare annotation is: (or (exists ((v_ULTIMATE.start_main_~i~0_12 Int)) (and (< v_ULTIMATE.start_main_~i~0_12 1024) (<= ULTIMATE.start_main_~i~0 (+ v_ULTIMATE.start_main_~i~0_12 1)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0.base|) (+ |ULTIMATE.start_main_~#A~0.offset| (* v_ULTIMATE.start_main_~i~0_12 4))) v_ULTIMATE.start_main_~i~0_12))) (= ULTIMATE.start_main_~i~0 0)) [2021-10-12 23:59:22,014 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2021-10-12 23:59:22,014 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 21) no Hoare annotation was computed. [2021-10-12 23:59:22,015 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-12 23:59:22,015 INFO L860 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-10-12 23:59:22,019 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-12 23:59:22,027 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,031 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,032 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,032 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,035 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,036 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,036 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,036 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 11:59:22 BoogieIcfgContainer [2021-10-12 23:59:22,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-12 23:59:22,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-12 23:59:22,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-12 23:59:22,039 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-12 23:59:22,039 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:17" (3/4) ... [2021-10-12 23:59:22,042 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-12 23:59:22,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-12 23:59:22,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-12 23:59:22,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-12 23:59:22,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-12 23:59:22,076 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists v_ULTIMATE.start_main_~i~0_12 : int :: (v_ULTIMATE.start_main_~i~0_12 < 1024 && i <= v_ULTIMATE.start_main_~i~0_12 + 1) && unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_12 * 4] == v_ULTIMATE.start_main_~i~0_12) || i == 0 [2021-10-12 23:59:22,088 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-12 23:59:22,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-12 23:59:22,090 INFO L168 Benchmark]: Toolchain (without parser) took 4977.40 ms. Allocated memory is still 132.1 MB. Free memory was 94.6 MB in the beginning and 78.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:22,090 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 132.1 MB. Free memory was 110.7 MB in the beginning and 110.6 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:22,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.04 ms. Allocated memory is still 132.1 MB. Free memory was 94.4 MB in the beginning and 107.1 MB in the end (delta: -12.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:22,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.58 ms. Allocated memory is still 132.1 MB. Free memory was 106.7 MB in the beginning and 105.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:22,092 INFO L168 Benchmark]: Boogie Preprocessor took 21.86 ms. Allocated memory is still 132.1 MB. Free memory was 105.5 MB in the beginning and 104.6 MB in the end (delta: 863.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:22,093 INFO L168 Benchmark]: RCFGBuilder took 260.36 ms. Allocated memory is still 132.1 MB. Free memory was 104.2 MB in the beginning and 95.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:22,093 INFO L168 Benchmark]: TraceAbstraction took 4372.77 ms. Allocated memory is still 132.1 MB. Free memory was 94.6 MB in the beginning and 80.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:22,094 INFO L168 Benchmark]: Witness Printer took 50.20 ms. Allocated memory is still 132.1 MB. Free memory was 80.3 MB in the beginning and 78.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:22,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 132.1 MB. Free memory was 110.7 MB in the beginning and 110.6 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.04 ms. Allocated memory is still 132.1 MB. Free memory was 94.4 MB in the beginning and 107.1 MB in the end (delta: -12.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.58 ms. Allocated memory is still 132.1 MB. Free memory was 106.7 MB in the beginning and 105.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.86 ms. Allocated memory is still 132.1 MB. Free memory was 105.5 MB in the beginning and 104.6 MB in the end (delta: 863.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 260.36 ms. Allocated memory is still 132.1 MB. Free memory was 104.2 MB in the beginning and 95.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4372.77 ms. Allocated memory is still 132.1 MB. Free memory was 94.6 MB in the beginning and 80.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * Witness Printer took 50.20 ms. Allocated memory is still 132.1 MB. Free memory was 80.3 MB in the beginning and 78.2 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4294.2ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 11.2ms, AutomataDifference: 2211.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 23.5ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 9 SDslu, 35 SDs, 0 SdLazy, 47 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2075.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 173.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 26 HoareAnnotationTreeSize, 2 FomulaSimplifications, 50 FormulaSimplificationTreeSizeReduction, 7.7ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 10.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 30.5ms SsaConstructionTime, 156.3ms SatisfiabilityAnalysisTime, 848.5ms InterpolantComputationTime, 66 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 59 ConstructedInterpolants, 2 QuantifiedInterpolants, 161 SizeOfPredicates, 6 NumberOfNonLiveVariables, 173 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2021-10-12 23:59:22,118 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,118 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,118 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,118 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,119 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,119 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,119 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-12 23:59:22,119 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] Derived loop invariant: (\exists v_ULTIMATE.start_main_~i~0_12 : int :: (v_ULTIMATE.start_main_~i~0_12 < 1024 && i <= v_ULTIMATE.start_main_~i~0_12 + 1) && unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_12 * 4] == v_ULTIMATE.start_main_~i~0_12) || i == 0 RESULT: Ultimate proved your program to be correct! [2021-10-12 23:59:22,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19ff9e6e-beaf-4306-a186-0d934aef0101/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...