./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/eureka_05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/eureka_05.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:59:41,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:59:41,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:59:41,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:59:41,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:59:41,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:59:41,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:59:41,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:59:41,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:59:41,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:59:41,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:59:41,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:59:41,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:59:41,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:59:41,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:59:41,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:59:41,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:59:41,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:59:41,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:59:41,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:59:41,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:59:41,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:59:41,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:59:41,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:59:41,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:59:41,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:59:41,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:59:41,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:59:41,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:59:41,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:59:41,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:59:41,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:59:41,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:59:41,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:59:42,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:59:42,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:59:42,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:59:42,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:59:42,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:59:42,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:59:42,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:59:42,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-22 14:59:42,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:59:42,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:59:42,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:59:42,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:59:42,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:59:42,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:59:42,041 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:59:42,041 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-22 14:59:42,041 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-22 14:59:42,041 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-22 14:59:42,042 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-22 14:59:42,042 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-22 14:59:42,042 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-22 14:59:42,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:59:42,042 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:59:42,043 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 14:59:42,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:59:42,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:59:42,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:59:42,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-22 14:59:42,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-22 14:59:42,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-22 14:59:42,044 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:59:42,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:59:42,044 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-22 14:59:42,045 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:59:42,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-22 14:59:42,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:59:42,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:59:42,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:59:42,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:59:42,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:59:42,047 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-22 14:59:42,047 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab [2021-11-22 14:59:42,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:59:42,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:59:42,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:59:42,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:59:42,418 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:59:42,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/loops/eureka_05.i [2021-11-22 14:59:42,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/data/215f20885/caa51899d1e74d3498393869f8f27cf0/FLAGec2ab31c2 [2021-11-22 14:59:43,026 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:59:43,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/sv-benchmarks/c/loops/eureka_05.i [2021-11-22 14:59:43,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/data/215f20885/caa51899d1e74d3498393869f8f27cf0/FLAGec2ab31c2 [2021-11-22 14:59:43,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/data/215f20885/caa51899d1e74d3498393869f8f27cf0 [2021-11-22 14:59:43,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:59:43,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:59:43,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:59:43,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:59:43,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:59:43,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44dbf424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43, skipping insertion in model container [2021-11-22 14:59:43,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:59:43,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:59:43,608 WARN L230 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_067c9312-cac1-448e-8c52-fe625e8c14bb/sv-benchmarks/c/loops/eureka_05.i[810,823] [2021-11-22 14:59:43,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:59:43,630 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:59:43,642 WARN L230 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_067c9312-cac1-448e-8c52-fe625e8c14bb/sv-benchmarks/c/loops/eureka_05.i[810,823] [2021-11-22 14:59:43,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:59:43,667 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:59:43,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43 WrapperNode [2021-11-22 14:59:43,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:59:43,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:59:43,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:59:43,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:59:43,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,705 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2021-11-22 14:59:43,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:59:43,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:59:43,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:59:43,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:59:43,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:59:43,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:59:43,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:59:43,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:59:43,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (1/1) ... [2021-11-22 14:59:43,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:43,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:43,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:43,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-22 14:59:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:59:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:59:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:59:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:59:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:59:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:59:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:59:43,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:59:43,895 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:59:43,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:59:44,149 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:59:44,155 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:59:44,155 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-22 14:59:44,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:59:44 BoogieIcfgContainer [2021-11-22 14:59:44,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:59:44,159 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-22 14:59:44,159 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-22 14:59:44,162 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-22 14:59:44,163 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 14:59:44,163 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 02:59:43" (1/3) ... [2021-11-22 14:59:44,165 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53772467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 02:59:44, skipping insertion in model container [2021-11-22 14:59:44,165 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 14:59:44,166 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:59:43" (2/3) ... [2021-11-22 14:59:44,166 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53772467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 02:59:44, skipping insertion in model container [2021-11-22 14:59:44,166 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 14:59:44,166 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:59:44" (3/3) ... [2021-11-22 14:59:44,168 INFO L388 chiAutomizerObserver]: Analyzing ICFG eureka_05.i [2021-11-22 14:59:44,213 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-22 14:59:44,229 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-22 14:59:44,230 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-22 14:59:44,230 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-22 14:59:44,230 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-22 14:59:44,230 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-22 14:59:44,230 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-22 14:59:44,231 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-22 14:59:44,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:44,294 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2021-11-22 14:59:44,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 14:59:44,295 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 14:59:44,308 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 14:59:44,308 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 14:59:44,308 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-22 14:59:44,309 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:44,312 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2021-11-22 14:59:44,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 14:59:44,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 14:59:44,313 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 14:59:44,313 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 14:59:44,320 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);~#array~0.base, ~#array~0.offset := 3, 0;call #Ultimate.allocInit(20, 3);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 7#L44-3true [2021-11-22 14:59:44,332 INFO L793 eck$LassoCheckResult]: Loop: 7#L44-3true assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 19#L44-2true main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 7#L44-3true [2021-11-22 14:59:44,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:44,338 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-22 14:59:44,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:44,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807641076] [2021-11-22 14:59:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:44,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:44,512 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:44,563 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:44,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:44,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-11-22 14:59:44,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:44,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144244482] [2021-11-22 14:59:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:44,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:44,593 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:44,601 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:44,610 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-11-22 14:59:44,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:44,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106762311] [2021-11-22 14:59:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:44,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:44,654 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:44,695 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:45,227 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 14:59:45,227 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 14:59:45,227 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 14:59:45,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 14:59:45,228 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 14:59:45,228 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:45,228 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 14:59:45,228 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 14:59:45,228 INFO L133 ssoRankerPreferences]: Filename of dumped script: eureka_05.i_Iteration1_Lasso [2021-11-22 14:59:45,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 14:59:45,229 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 14:59:45,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 14:59:45,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 14:59:45,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 14:59:45,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 14:59:45,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 14:59:45,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 14:59:45,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 14:59:45,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 14:59:46,006 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 14:59:46,010 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 14:59:46,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-22 14:59:46,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 14:59:46,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 14:59:46,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 14:59:46,049 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:46,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,095 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,109 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,110 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-22 14:59:46,133 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:46,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,175 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,188 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,188 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-22 14:59:46,211 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:46,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,266 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-22 14:59:46,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,274 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 14:59:46,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,275 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 14:59:46,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 14:59:46,285 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:46,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,326 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,339 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,339 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-22 14:59:46,357 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:46,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,394 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,399 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,415 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,415 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-22 14:59:46,425 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:46,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-22 14:59:46,453 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,464 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,464 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,476 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:46,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,518 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,523 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,533 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,537 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,537 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-22 14:59:46,557 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:46,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,595 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-22 14:59:46,600 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,613 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,613 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,630 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-11-22 14:59:46,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,650 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,673 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,685 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,685 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-22 14:59:46,701 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:46,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,738 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-22 14:59:46,751 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,752 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,771 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 14:59:46,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-11-22 14:59:46,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,795 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-22 14:59:46,799 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-22 14:59:46,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 14:59:46,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 14:59:46,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 14:59:46,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 14:59:46,816 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 14:59:46,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 14:59:46,845 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 14:59:46,872 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-11-22 14:59:46,872 INFO L444 ModelExtractionUtils]: 2 out of 16 variables were initially zero. Simplification set additionally 11 variables to zero. [2021-11-22 14:59:46,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 14:59:46,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:46,882 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 14:59:46,910 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 14:59:46,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-22 14:59:46,967 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-22 14:59:46,967 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 14:59:46,968 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1#1, v_rep(select #length ULTIMATE.start_main_~#array~1#1.base)_1) = 8*ULTIMATE.start_main_~i~1#1 + 1*v_rep(select #length ULTIMATE.start_main_~#array~1#1.base)_1 Supporting invariants [] [2021-11-22 14:59:46,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:47,103 INFO L297 tatePredicateManager]: 27 out of 27 supporting invariants were superfluous and have been removed [2021-11-22 14:59:47,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:47,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 14:59:47,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:47,174 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 14:59:47,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:47,267 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-22 14:59:47,269 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:47,319 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 71 transitions. Complement of second has 8 states. [2021-11-22 14:59:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-22 14:59:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2021-11-22 14:59:47,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-22 14:59:47,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 14:59:47,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-22 14:59:47,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 14:59:47,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 42 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-22 14:59:47,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 14:59:47,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 71 transitions. [2021-11-22 14:59:47,333 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-22 14:59:47,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 18 states and 24 transitions. [2021-11-22 14:59:47,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-22 14:59:47,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-11-22 14:59:47,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2021-11-22 14:59:47,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:47,339 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-22 14:59:47,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2021-11-22 14:59:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-22 14:59:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 17 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) [2021-11-22 14:59:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-11-22 14:59:47,364 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-22 14:59:47,364 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-22 14:59:47,364 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-22 14:59:47,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2021-11-22 14:59:47,365 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-22 14:59:47,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 14:59:47,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 14:59:47,366 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-22 14:59:47,366 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 14:59:47,366 INFO L791 eck$LassoCheckResult]: Stem: 221#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);~#array~0.base, ~#array~0.offset := 3, 0;call #Ultimate.allocInit(20, 3);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 222#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 223#L44-3 assume !(main_~i~1#1 >= 0); 224#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 220#L30-3 [2021-11-22 14:59:47,367 INFO L793 eck$LassoCheckResult]: Loop: 220#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 233#L32-3 assume !(SelectionSort_~i~0#1 < ~n~0); 234#L32-4 call SelectionSort_#t~mem5#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem5#1;havoc SelectionSort_#t~mem5#1;call SelectionSort_#t~mem6#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4);call write~int(SelectionSort_#t~mem6#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);havoc SelectionSort_#t~mem6#1;call write~int(SelectionSort_~temp~0#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 219#L30-2 SelectionSort_#t~post1#1 := SelectionSort_~lh~0#1;SelectionSort_~lh~0#1 := 1 + SelectionSort_#t~post1#1;havoc SelectionSort_#t~post1#1; 220#L30-3 [2021-11-22 14:59:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2021-11-22 14:59:47,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:47,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183859153] [2021-11-22 14:59:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:47,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:47,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:47,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183859153] [2021-11-22 14:59:47,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183859153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:59:47,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:59:47,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:59:47,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445810182] [2021-11-22 14:59:47,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:59:47,412 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 14:59:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:47,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1668713, now seen corresponding path program 1 times [2021-11-22 14:59:47,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:47,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254118785] [2021-11-22 14:59:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:47,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:47,424 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:47,435 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:47,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-22 14:59:47,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:59:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:59:47,610 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:59:47,632 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-11-22 14:59:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:59:47,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 23 transitions. [2021-11-22 14:59:47,637 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-22 14:59:47,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 18 states and 22 transitions. [2021-11-22 14:59:47,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-22 14:59:47,639 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-11-22 14:59:47,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2021-11-22 14:59:47,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:47,640 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-22 14:59:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2021-11-22 14:59:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-11-22 14:59:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-22 14:59:47,645 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-22 14:59:47,645 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-22 14:59:47,645 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-22 14:59:47,645 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2021-11-22 14:59:47,647 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-22 14:59:47,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 14:59:47,647 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 14:59:47,648 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-22 14:59:47,648 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 14:59:47,648 INFO L791 eck$LassoCheckResult]: Stem: 262#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);~#array~0.base, ~#array~0.offset := 3, 0;call #Ultimate.allocInit(20, 3);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 263#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 264#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 265#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 266#L44-3 assume !(main_~i~1#1 >= 0); 267#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 261#L30-3 [2021-11-22 14:59:47,648 INFO L793 eck$LassoCheckResult]: Loop: 261#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 275#L32-3 assume !(SelectionSort_~i~0#1 < ~n~0); 276#L32-4 call SelectionSort_#t~mem5#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem5#1;havoc SelectionSort_#t~mem5#1;call SelectionSort_#t~mem6#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4);call write~int(SelectionSort_#t~mem6#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);havoc SelectionSort_#t~mem6#1;call write~int(SelectionSort_~temp~0#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 260#L30-2 SelectionSort_#t~post1#1 := SelectionSort_~lh~0#1;SelectionSort_~lh~0#1 := 1 + SelectionSort_#t~post1#1;havoc SelectionSort_#t~post1#1; 261#L30-3 [2021-11-22 14:59:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2021-11-22 14:59:47,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:47,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121496391] [2021-11-22 14:59:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:47,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:47,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:47,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121496391] [2021-11-22 14:59:47,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121496391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:47,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845227272] [2021-11-22 14:59:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:47,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:47,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:47,726 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:59:47,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 14:59:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:47,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:59:47,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:47,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:59:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:47,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845227272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:59:47,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:59:47,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-22 14:59:47,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754640185] [2021-11-22 14:59:47,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:59:47,829 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 14:59:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:47,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1668713, now seen corresponding path program 2 times [2021-11-22 14:59:47,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:47,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967881682] [2021-11-22 14:59:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:47,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:47,857 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:47,871 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:47,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:47,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:59:47,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:59:47,991 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. cyclomatic complexity: 7 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) [2021-11-22 14:59:48,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:59:48,039 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-11-22 14:59:48,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:59:48,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 31 transitions. [2021-11-22 14:59:48,044 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-22 14:59:48,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 31 transitions. [2021-11-22 14:59:48,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-11-22 14:59:48,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-11-22 14:59:48,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2021-11-22 14:59:48,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:48,046 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-22 14:59:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2021-11-22 14:59:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-11-22 14:59:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-22 14:59:48,051 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-22 14:59:48,052 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-22 14:59:48,052 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-22 14:59:48,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2021-11-22 14:59:48,055 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-22 14:59:48,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 14:59:48,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 14:59:48,057 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2021-11-22 14:59:48,057 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 14:59:48,058 INFO L791 eck$LassoCheckResult]: Stem: 345#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);~#array~0.base, ~#array~0.offset := 3, 0;call #Ultimate.allocInit(20, 3);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 346#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 347#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 348#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 349#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 350#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 365#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 364#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 363#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 362#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 361#L44-3 assume !(main_~i~1#1 >= 0); 351#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 344#L30-3 [2021-11-22 14:59:48,058 INFO L793 eck$LassoCheckResult]: Loop: 344#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 359#L32-3 assume !(SelectionSort_~i~0#1 < ~n~0); 360#L32-4 call SelectionSort_#t~mem5#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem5#1;havoc SelectionSort_#t~mem5#1;call SelectionSort_#t~mem6#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4);call write~int(SelectionSort_#t~mem6#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);havoc SelectionSort_#t~mem6#1;call write~int(SelectionSort_~temp~0#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 343#L30-2 SelectionSort_#t~post1#1 := SelectionSort_~lh~0#1;SelectionSort_~lh~0#1 := 1 + SelectionSort_#t~post1#1;havoc SelectionSort_#t~post1#1; 344#L30-3 [2021-11-22 14:59:48,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 2 times [2021-11-22 14:59:48,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:48,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232079444] [2021-11-22 14:59:48,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:48,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:48,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:48,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232079444] [2021-11-22 14:59:48,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232079444] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:48,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762269810] [2021-11-22 14:59:48,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:59:48,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:48,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:48,158 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:59:48,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 14:59:48,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:59:48,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:59:48,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 14:59:48,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:48,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:59:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:48,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762269810] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:59:48,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:59:48,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2021-11-22 14:59:48,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936963540] [2021-11-22 14:59:48,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:59:48,286 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 14:59:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1668713, now seen corresponding path program 3 times [2021-11-22 14:59:48,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:48,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551831675] [2021-11-22 14:59:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:48,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,305 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,328 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:48,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:59:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:59:48,439 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. cyclomatic complexity: 7 Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:59:48,516 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2021-11-22 14:59:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:59:48,518 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 45 transitions. [2021-11-22 14:59:48,521 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-22 14:59:48,523 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 45 transitions. [2021-11-22 14:59:48,523 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-11-22 14:59:48,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-11-22 14:59:48,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 45 transitions. [2021-11-22 14:59:48,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:48,526 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-11-22 14:59:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 45 transitions. [2021-11-22 14:59:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2021-11-22 14:59:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-22 14:59:48,533 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-22 14:59:48,533 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-22 14:59:48,534 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-22 14:59:48,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 29 transitions. [2021-11-22 14:59:48,541 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-22 14:59:48,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 14:59:48,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 14:59:48,543 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1] [2021-11-22 14:59:48,543 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-22 14:59:48,544 INFO L791 eck$LassoCheckResult]: Stem: 485#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);~#array~0.base, ~#array~0.offset := 3, 0;call #Ultimate.allocInit(20, 3);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 486#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 487#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 488#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 489#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 490#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 507#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 506#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 505#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 504#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 503#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 502#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 501#L44-3 assume !(main_~i~1#1 >= 0); 491#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 484#L30-3 [2021-11-22 14:59:48,544 INFO L793 eck$LassoCheckResult]: Loop: 484#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 499#L32-3 assume !(SelectionSort_~i~0#1 < ~n~0); 500#L32-4 call SelectionSort_#t~mem5#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem5#1;havoc SelectionSort_#t~mem5#1;call SelectionSort_#t~mem6#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4);call write~int(SelectionSort_#t~mem6#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~lh~0#1, 4);havoc SelectionSort_#t~mem6#1;call write~int(SelectionSort_~temp~0#1, ~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 483#L30-2 SelectionSort_#t~post1#1 := SelectionSort_~lh~0#1;SelectionSort_~lh~0#1 := 1 + SelectionSort_#t~post1#1;havoc SelectionSort_#t~post1#1; 484#L30-3 [2021-11-22 14:59:48,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1745699051, now seen corresponding path program 3 times [2021-11-22 14:59:48,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:48,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129327984] [2021-11-22 14:59:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:48,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,583 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,619 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1668713, now seen corresponding path program 4 times [2021-11-22 14:59:48,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:48,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874157722] [2021-11-22 14:59:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:48,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,635 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,645 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:48,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:48,646 INFO L85 PathProgramCache]: Analyzing trace with hash -743535747, now seen corresponding path program 1 times [2021-11-22 14:59:48,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:48,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386710208] [2021-11-22 14:59:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:48,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-22 14:59:48,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:48,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386710208] [2021-11-22 14:59:48,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386710208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:59:48,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:59:48,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:59:48,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989463402] [2021-11-22 14:59:48,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:59:48,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:59:48,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:59:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:59:48,838 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. cyclomatic complexity: 7 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2021-11-22 14:59:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:59:48,879 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-11-22 14:59:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:59:48,880 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 41 transitions. [2021-11-22 14:59:48,882 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2021-11-22 14:59:48,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 41 transitions. [2021-11-22 14:59:48,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-11-22 14:59:48,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-11-22 14:59:48,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 41 transitions. [2021-11-22 14:59:48,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 14:59:48,883 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-22 14:59:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 41 transitions. [2021-11-22 14:59:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2021-11-22 14:59:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:59:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-22 14:59:48,886 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-22 14:59:48,886 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-22 14:59:48,886 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-22 14:59:48,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 31 transitions. [2021-11-22 14:59:48,887 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-22 14:59:48,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 14:59:48,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 14:59:48,887 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-11-22 14:59:48,887 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 14:59:48,888 INFO L791 eck$LassoCheckResult]: Stem: 556#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);~#array~0.base, ~#array~0.offset := 3, 0;call #Ultimate.allocInit(20, 3);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 557#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 558#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 559#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 560#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 561#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 580#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 579#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 578#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 577#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 576#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 575#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 574#L44-3 assume !(main_~i~1#1 >= 0); 562#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 563#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 572#L32-3 assume !!(SelectionSort_~i~0#1 < ~n~0);call SelectionSort_#t~mem3#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~i~0#1, 4);call SelectionSort_#t~mem4#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 568#L33 [2021-11-22 14:59:48,888 INFO L793 eck$LassoCheckResult]: Loop: 568#L33 assume SelectionSort_#t~mem3#1 < SelectionSort_#t~mem4#1;havoc SelectionSort_#t~mem3#1;havoc SelectionSort_#t~mem4#1;SelectionSort_~rh~0#1 := SelectionSort_~i~0#1; 569#L32-2 SelectionSort_#t~post2#1 := SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_#t~post2#1;havoc SelectionSort_#t~post2#1; 571#L32-3 assume !!(SelectionSort_~i~0#1 < ~n~0);call SelectionSort_#t~mem3#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~i~0#1, 4);call SelectionSort_#t~mem4#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 568#L33 [2021-11-22 14:59:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:48,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1715425501, now seen corresponding path program 1 times [2021-11-22 14:59:48,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:48,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812301758] [2021-11-22 14:59:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:48,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,904 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,923 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:48,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:48,924 INFO L85 PathProgramCache]: Analyzing trace with hash 64667, now seen corresponding path program 1 times [2021-11-22 14:59:48,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:48,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661545807] [2021-11-22 14:59:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:48,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,928 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:59:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:59:48,933 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:59:48,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:59:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1574719937, now seen corresponding path program 1 times [2021-11-22 14:59:48,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:59:48,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071760604] [2021-11-22 14:59:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:48,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:59:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:49,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:59:49,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071760604] [2021-11-22 14:59:49,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071760604] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:59:49,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354640355] [2021-11-22 14:59:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:59:49,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:59:49,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:59:49,546 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:59:49,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 14:59:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:59:49,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 14:59:49,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:49,690 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 14:59:49,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2021-11-22 14:59:49,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:59:49,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-22 14:59:49,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:59:49,884 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-22 14:59:49,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 48 [2021-11-22 14:59:50,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:59:50,022 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-22 14:59:50,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 48 [2021-11-22 14:59:50,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:59:50,137 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-22 14:59:50,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 48 [2021-11-22 14:59:50,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:59:50,278 INFO L354 Elim1Store]: treesize reduction 140, result has 16.7 percent of original size [2021-11-22 14:59:50,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 52 [2021-11-22 15:00:38,421 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:00:50,656 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:01:02,777 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:01:02,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:01:02,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:01:02,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:01:02,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:01:02,815 INFO L354 Elim1Store]: treesize reduction 92, result has 1.1 percent of original size [2021-11-22 15:01:02,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 61 treesize of output 23 [2021-11-22 15:01:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 15:01:02,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:01:03,877 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~1#1| Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |ULTIMATE.start_main_~i~1#1|)) |c_~#array~0.base|))) (<= (select .cse0 |c_~#array~0.offset|) (select .cse0 (+ |c_~#array~0.offset| 4))))) is different from false [2021-11-22 15:01:14,088 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~1#1_49| Int) (|v_ULTIMATE.start_main_~i~1#1_51| Int) (|ULTIMATE.start_main_~i~1#1| Int) (|v_ULTIMATE.start_main_~i~1#1_53| Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base| (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |ULTIMATE.start_main_~i~1#1|) (+ (* |v_ULTIMATE.start_main_~i~1#1_53| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_53|) (+ (* |v_ULTIMATE.start_main_~i~1#1_51| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_51|) (+ (* |v_ULTIMATE.start_main_~i~1#1_49| 4) |c_ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_49|)) |c_~#array~0.base|))) (<= (select .cse0 |c_~#array~0.offset|) (select .cse0 (+ |c_~#array~0.offset| 4))))) is different from false [2021-11-22 15:01:16,996 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~1#1_49| Int) (|ULTIMATE.start_main_~#array~1#1.offset| Int) (|v_ULTIMATE.start_main_~i~1#1_51| Int) (|v_ULTIMATE.start_main_~i~1#1_55| Int) (|ULTIMATE.start_main_~i~1#1| Int) (|v_ULTIMATE.start_main_~i~1#1_53| Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base| (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |ULTIMATE.start_main_~i~1#1|) (+ (* |v_ULTIMATE.start_main_~i~1#1_55| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_55|) (+ (* |v_ULTIMATE.start_main_~i~1#1_53| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_53|) (+ (* |v_ULTIMATE.start_main_~i~1#1_51| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_51|) (+ (* |v_ULTIMATE.start_main_~i~1#1_49| 4) |ULTIMATE.start_main_~#array~1#1.offset|) |v_ULTIMATE.start_main_~i~1#1_49|)) |c_~#array~0.base|))) (<= (select .cse0 |c_~#array~0.offset|) (select .cse0 (+ |c_~#array~0.offset| 4))))) is different from false [2021-11-22 15:01:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 19 not checked. [2021-11-22 15:01:17,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354640355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:01:17,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:01:17,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 11] total 28 [2021-11-22 15:01:17,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584082302] [2021-11-22 15:01:17,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:01:17,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:01:17,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-22 15:01:17,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=542, Unknown=9, NotChecked=150, Total=812 [2021-11-22 15:01:17,226 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. cyclomatic complexity: 7 Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 28 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:01:43,196 WARN L227 SmtUtils]: Spent 24.05s on a formula simplification. DAG size of input: 53 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:02:07,333 WARN L227 SmtUtils]: Spent 12.07s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:02:07,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:02:07,401 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-22 15:02:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 15:02:07,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 40 transitions. [2021-11-22 15:02:07,403 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-22 15:02:07,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 40 transitions. [2021-11-22 15:02:07,404 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-11-22 15:02:07,404 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-22 15:02:07,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 40 transitions. [2021-11-22 15:02:07,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:02:07,404 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-11-22 15:02:07,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 40 transitions. [2021-11-22 15:02:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2021-11-22 15:02:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:02:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-22 15:02:07,408 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-22 15:02:07,408 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-22 15:02:07,408 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-22 15:02:07,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 32 transitions. [2021-11-22 15:02:07,408 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-11-22 15:02:07,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:02:07,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:02:07,409 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:02:07,410 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:02:07,410 INFO L791 eck$LassoCheckResult]: Stem: 788#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);~#array~0.base, ~#array~0.offset := 3, 0;call #Ultimate.allocInit(20, 3);call write~init~int(0, ~#array~0.base, ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 4 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 8 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 12 + ~#array~0.offset, 4);call write~init~int(0, ~#array~0.base, 16 + ~#array~0.offset, 4);~n~0 := 5; 789#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post7#1, main_#t~mem9#1, main_#t~post8#1, main_~#array~1#1.base, main_~#array~1#1.offset, main_~i~1#1;call main_~#array~1#1.base, main_~#array~1#1.offset := #Ultimate.allocOnStack(20);havoc main_~i~1#1;main_~i~1#1 := 4; 790#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 791#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 792#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 793#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 813#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 812#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 811#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 810#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 809#L44-3 assume !!(main_~i~1#1 >= 0);call write~int(main_~i~1#1, main_~#array~1#1.base, main_~#array~1#1.offset + 4 * main_~i~1#1, 4); 808#L44-2 main_#t~post7#1 := main_~i~1#1;main_~i~1#1 := main_#t~post7#1 - 1;havoc main_#t~post7#1; 807#L44-3 assume !(main_~i~1#1 >= 0); 794#L44-4 assume { :begin_inline_SelectionSort } true;havoc SelectionSort_#t~mem3#1, SelectionSort_#t~mem4#1, SelectionSort_#t~post2#1, SelectionSort_#t~mem5#1, SelectionSort_#t~mem6#1, SelectionSort_#t~post1#1, SelectionSort_~lh~0#1, SelectionSort_~rh~0#1, SelectionSort_~i~0#1, SelectionSort_~temp~0#1;havoc SelectionSort_~lh~0#1;havoc SelectionSort_~rh~0#1;havoc SelectionSort_~i~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~lh~0#1 := 0; 795#L30-3 assume !!(SelectionSort_~lh~0#1 < ~n~0);SelectionSort_~rh~0#1 := SelectionSort_~lh~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~lh~0#1; 804#L32-3 assume !!(SelectionSort_~i~0#1 < ~n~0);call SelectionSort_#t~mem3#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~i~0#1, 4);call SelectionSort_#t~mem4#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 800#L33 assume !(SelectionSort_#t~mem3#1 < SelectionSort_#t~mem4#1);havoc SelectionSort_#t~mem3#1;havoc SelectionSort_#t~mem4#1; 801#L32-2 [2021-11-22 15:02:07,410 INFO L793 eck$LassoCheckResult]: Loop: 801#L32-2 SelectionSort_#t~post2#1 := SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_#t~post2#1;havoc SelectionSort_#t~post2#1; 803#L32-3 assume !!(SelectionSort_~i~0#1 < ~n~0);call SelectionSort_#t~mem3#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~i~0#1, 4);call SelectionSort_#t~mem4#1 := read~int(~#array~0.base, ~#array~0.offset + 4 * SelectionSort_~rh~0#1, 4); 806#L33 assume SelectionSort_#t~mem3#1 < SelectionSort_#t~mem4#1;havoc SelectionSort_#t~mem3#1;havoc SelectionSort_#t~mem4#1;SelectionSort_~rh~0#1 := SelectionSort_~i~0#1; 801#L32-2 [2021-11-22 15:02:07,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:07,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1638583016, now seen corresponding path program 1 times [2021-11-22 15:02:07,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:07,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28238183] [2021-11-22 15:02:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:07,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:02:07,430 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:02:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:02:07,452 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:02:07,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash 68297, now seen corresponding path program 2 times [2021-11-22 15:02:07,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:07,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678889993] [2021-11-22 15:02:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:07,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:02:07,458 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:02:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:02:07,463 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:02:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:02:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1571618174, now seen corresponding path program 1 times [2021-11-22 15:02:07,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:02:07,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963385998] [2021-11-22 15:02:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:07,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:02:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-22 15:02:07,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:02:07,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963385998] [2021-11-22 15:02:07,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963385998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:02:07,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117472181] [2021-11-22 15:02:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:02:07,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:02:07,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:02:07,878 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:02:07,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 15:02:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:02:07,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-22 15:02:07,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:02:07,979 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:02:07,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2021-11-22 15:02:08,031 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-22 15:02:08,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-11-22 15:02:08,133 INFO L354 Elim1Store]: treesize reduction 49, result has 18.3 percent of original size [2021-11-22 15:02:08,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 50 [2021-11-22 15:02:08,231 INFO L354 Elim1Store]: treesize reduction 49, result has 18.3 percent of original size [2021-11-22 15:02:08,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 50 [2021-11-22 15:02:08,367 INFO L354 Elim1Store]: treesize reduction 49, result has 18.3 percent of original size [2021-11-22 15:02:08,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 50 [2021-11-22 15:02:08,490 INFO L354 Elim1Store]: treesize reduction 160, result has 15.8 percent of original size [2021-11-22 15:02:08,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 54 [2021-11-22 15:02:56,611 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:03:08,833 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:03:20,935 WARN L227 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:03:33,104 WARN L227 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:03:45,264 WARN L227 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:03:57,413 WARN L227 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:03:57,476 INFO L354 Elim1Store]: treesize reduction 148, result has 12.4 percent of original size [2021-11-22 15:03:57,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 46 [2021-11-22 15:03:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 15:03:57,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:06:04,263 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-22 15:06:04,264 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-22 15:06:04,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:06:04,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-22 15:06:04,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863535028] [2021-11-22 15:06:04,265 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:06:04,266 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.(UndoableWrapperScript.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:179) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:159) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition(TransFormulaUtils.java:231) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition(TransFormulaUtils.java:135) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.SequentialComposition.getInterproceduralTransFormula(SequentialComposition.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.SequentialComposition.getInterproceduralTransFormula(SequentialComposition.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.computeTF(LassoCheck.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.computeLoopTF(LassoCheck.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:833) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 30 more [2021-11-22 15:06:04,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 101 [2021-11-22 15:06:04,269 INFO L158 Benchmark]: Toolchain (without parser) took 380883.12ms. Allocated memory was 104.9MB in the beginning and 176.2MB in the end (delta: 71.3MB). Free memory was 65.0MB in the beginning and 99.5MB in the end (delta: -34.5MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2021-11-22 15:06:04,269 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:06:04,269 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.05ms. Allocated memory is still 104.9MB. Free memory was 64.8MB in the beginning and 54.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:06:04,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.01ms. Allocated memory is still 104.9MB. Free memory was 54.8MB in the beginning and 53.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:06:04,270 INFO L158 Benchmark]: Boogie Preprocessor took 27.88ms. Allocated memory is still 104.9MB. Free memory was 53.1MB in the beginning and 51.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:06:04,270 INFO L158 Benchmark]: RCFGBuilder took 422.71ms. Allocated memory was 104.9MB in the beginning and 146.8MB in the end (delta: 41.9MB). Free memory was 51.8MB in the beginning and 115.2MB in the end (delta: -63.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-11-22 15:06:04,271 INFO L158 Benchmark]: BuchiAutomizer took 380109.40ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 115.2MB in the beginning and 99.5MB in the end (delta: 15.7MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2021-11-22 15:06:04,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.05ms. Allocated memory is still 104.9MB. Free memory was 64.8MB in the beginning and 54.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.01ms. Allocated memory is still 104.9MB. Free memory was 54.8MB in the beginning and 53.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.88ms. Allocated memory is still 104.9MB. Free memory was 53.1MB in the beginning and 51.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 422.71ms. Allocated memory was 104.9MB in the beginning and 146.8MB in the end (delta: 41.9MB). Free memory was 51.8MB in the beginning and 115.2MB in the end (delta: -63.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 380109.40ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 115.2MB in the beginning and 99.5MB in the end (delta: 15.7MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-22 15:06:04,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-22 15:06:04,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-22 15:06:04,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 15:06:04,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_067c9312-cac1-448e-8c52-fe625e8c14bb/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) Connection to SMT solver broken