./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/GulwaniJainKoskinen-2009PLDI-Fig1-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/GulwaniJainKoskinen-2009PLDI-Fig1-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN --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 64bit --witnessprinter.graph.data.programhash 8fbd99b1bfb27b318d252229087f8d9132096866b72085e8874326b5a6d541b4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:18:20,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:18:20,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:18:20,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:18:20,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:18:20,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:18:20,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:18:20,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:18:20,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:18:20,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:18:20,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:18:20,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:18:20,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:18:20,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:18:20,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:18:20,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:18:20,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:18:20,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:18:20,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:18:20,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:18:20,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:18:20,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:18:20,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:18:20,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:18:20,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:18:20,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:18:20,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:18:20,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:18:20,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:18:20,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:18:20,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:18:20,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:18:20,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:18:20,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:18:20,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:18:20,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:18:20,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:18:20,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:18:20,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:18:20,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:18:20,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:18:20,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-20 12:18:20,632 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:18:20,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:18:20,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:18:20,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:18:20,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:18:20,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:18:20,634 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:18:20,635 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 12:18:20,635 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 12:18:20,635 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 12:18:20,635 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 12:18:20,635 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 12:18:20,636 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 12:18:20,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:18:20,636 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:18:20,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:18:20,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:18:20,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 12:18:20,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 12:18:20,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 12:18:20,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:18:20,638 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 12:18:20,638 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:18:20,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 12:18:20,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:18:20,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:18:20,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:18:20,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:18:20,640 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 12:18:20,640 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_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fbd99b1bfb27b318d252229087f8d9132096866b72085e8874326b5a6d541b4 [2022-11-20 12:18:20,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:18:20,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:18:20,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:18:20,975 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:18:20,977 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:18:20,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-memory-alloca/GulwaniJainKoskinen-2009PLDI-Fig1-alloca-2.i [2022-11-20 12:18:24,335 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:18:24,593 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:18:24,594 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/sv-benchmarks/c/termination-memory-alloca/GulwaniJainKoskinen-2009PLDI-Fig1-alloca-2.i [2022-11-20 12:18:24,606 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/data/e78eee32d/588a56b98f6f4f82bfff6ed3b1ea1543/FLAGde0482a2c [2022-11-20 12:18:24,625 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/data/e78eee32d/588a56b98f6f4f82bfff6ed3b1ea1543 [2022-11-20 12:18:24,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:18:24,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:18:24,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:18:24,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:18:24,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:18:24,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:18:24" (1/1) ... [2022-11-20 12:18:24,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118feff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:24, skipping insertion in model container [2022-11-20 12:18:24,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:18:24" (1/1) ... [2022-11-20 12:18:24,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:18:24,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:18:24,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:18:24,992 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:18:25,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:18:25,063 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:18:25,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25 WrapperNode [2022-11-20 12:18:25,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:18:25,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:18:25,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:18:25,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:18:25,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,125 INFO L138 Inliner]: procedures = 110, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 68 [2022-11-20 12:18:25,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:18:25,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:18:25,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:18:25,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:18:25,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:18:25,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:18:25,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:18:25,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:18:25,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (1/1) ... [2022-11-20 12:18:25,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:25,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:25,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:25,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 12:18:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:18:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:18:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:18:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:18:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:18:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:18:25,438 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:18:25,445 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:18:25,703 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:18:25,716 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:18:25,716 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:18:25,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:18:25 BoogieIcfgContainer [2022-11-20 12:18:25,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:18:25,720 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 12:18:25,720 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 12:18:25,724 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 12:18:25,725 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:18:25,726 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:18:24" (1/3) ... [2022-11-20 12:18:25,727 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30f6ecb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:18:25, skipping insertion in model container [2022-11-20 12:18:25,727 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:18:25,727 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:25" (2/3) ... [2022-11-20 12:18:25,727 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30f6ecb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:18:25, skipping insertion in model container [2022-11-20 12:18:25,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:18:25,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:18:25" (3/3) ... [2022-11-20 12:18:25,729 INFO L332 chiAutomizerObserver]: Analyzing ICFG GulwaniJainKoskinen-2009PLDI-Fig1-alloca-2.i [2022-11-20 12:18:25,791 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 12:18:25,791 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 12:18:25,791 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 12:18:25,791 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 12:18:25,791 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 12:18:25,792 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 12:18:25,792 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 12:18:25,792 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 12:18:25,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:25,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:18:25,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:18:25,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:18:25,824 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 12:18:25,824 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:18:25,824 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 12:18:25,825 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:25,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:18:25,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:18:25,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:18:25,829 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 12:18:25,829 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:18:25,838 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 12#L552true assume !main_#t~short9#1; 2#L552-2true assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 8#L556-2true [2022-11-20 12:18:25,839 INFO L750 eck$LassoCheckResult]: Loop: 8#L556-2true call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 11#L555-1true assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 7#L556true assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 8#L556-2true [2022-11-20 12:18:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 925671, now seen corresponding path program 1 times [2022-11-20 12:18:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:25,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349341767] [2022-11-20 12:18:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:25,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:26,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:26,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349341767] [2022-11-20 12:18:26,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349341767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:18:26,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:18:26,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:18:26,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37463986] [2022-11-20 12:18:26,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:18:26,183 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:18:26,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash 45842, now seen corresponding path program 1 times [2022-11-20 12:18:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:26,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515035980] [2022-11-20 12:18:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:26,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:26,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:26,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:18:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:18:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:18:26,574 INFO L87 Difference]: Start difference. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) 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) [2022-11-20 12:18:26,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:26,598 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2022-11-20 12:18:26,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2022-11-20 12:18:26,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:18:26,605 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 7 states and 8 transitions. [2022-11-20 12:18:26,606 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-20 12:18:26,607 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-11-20 12:18:26,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2022-11-20 12:18:26,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:18:26,608 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-20 12:18:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2022-11-20 12:18:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-20 12:18:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-11-20 12:18:26,639 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-20 12:18:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:18:26,651 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-20 12:18:26,651 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 12:18:26,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2022-11-20 12:18:26,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:18:26,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:18:26,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:18:26,653 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 12:18:26,653 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:18:26,654 INFO L748 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 37#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 40#L552 assume main_#t~short9#1;call main_#t~mem7#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);main_#t~short9#1 := main_#t~mem7#1 < main_#t~mem8#1; 34#L552-2 assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 35#L556-2 [2022-11-20 12:18:26,654 INFO L750 eck$LassoCheckResult]: Loop: 35#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 39#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 38#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 35#L556-2 [2022-11-20 12:18:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash 925609, now seen corresponding path program 1 times [2022-11-20 12:18:26,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:26,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123789246] [2022-11-20 12:18:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:26,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:26,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:26,762 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash 45842, now seen corresponding path program 2 times [2022-11-20 12:18:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:26,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751004261] [2022-11-20 12:18:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:26,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:26,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:26,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:26,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029994, now seen corresponding path program 1 times [2022-11-20 12:18:26,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:26,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966549029] [2022-11-20 12:18:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:26,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:26,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:26,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:28,180 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:18:28,180 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:18:28,181 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:18:28,181 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:18:28,181 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:18:28,182 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:28,182 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:18:28,182 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:18:28,182 INFO L133 ssoRankerPreferences]: Filename of dumped script: GulwaniJainKoskinen-2009PLDI-Fig1-alloca-2.i_Iteration2_Lasso [2022-11-20 12:18:28,182 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:18:28,183 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:18:28,213 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,223 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,226 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,230 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,277 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,280 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,284 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,287 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,291 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,294 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,297 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,300 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,303 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,307 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,310 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,313 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,316 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,318 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,321 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:28,324 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:29,000 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:29,565 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:18:29,571 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:18:29,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:29,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:29,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:29,610 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 [2022-11-20 12:18:29,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 12:18:29,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:29,628 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:29,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:29,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:29,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:29,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:29,640 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:29,655 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:29,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-20 12:18:29,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:29,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:29,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:29,680 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 [2022-11-20 12:18:29,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 12:18:29,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:29,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:29,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:29,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:29,697 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:29,698 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:29,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:29,718 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:29,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:29,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:29,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:29,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:29,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 12:18:29,739 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 [2022-11-20 12:18:29,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:29,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:29,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:29,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:29,763 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:29,763 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:29,774 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:29,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:29,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:29,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:29,785 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:29,793 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 [2022-11-20 12:18:29,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:29,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:29,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:29,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:29,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:29,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:29,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:29,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 12:18:29,818 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:29,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:29,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:29,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:29,830 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:29,839 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 [2022-11-20 12:18:29,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 12:18:29,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:29,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:29,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:29,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:29,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:29,855 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:29,855 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:29,882 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:29,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:29,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:29,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:29,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:29,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 12:18:29,900 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 [2022-11-20 12:18:29,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:29,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:29,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:29,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:29,918 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:29,918 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:29,935 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:29,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:29,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:29,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:29,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:29,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 12:18:29,967 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 [2022-11-20 12:18:29,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:29,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:29,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:29,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:29,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:29,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:29,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:30,007 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,014 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,024 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 [2022-11-20 12:18:30,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 12:18:30,042 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:30,042 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:30,053 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,065 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,075 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 [2022-11-20 12:18:30,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 12:18:30,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:30,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,090 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 12:18:30,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,093 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 12:18:30,094 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:30,109 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 12:18:30,131 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 [2022-11-20 12:18:30,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,145 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:30,145 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,146 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,150 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:30,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:30,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,188 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 [2022-11-20 12:18:30,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 12:18:30,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:30,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:30,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:30,213 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,224 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 12:18:30,228 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 [2022-11-20 12:18:30,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,240 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:30,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:30,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:30,250 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,255 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 12:18:30,260 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 [2022-11-20 12:18:30,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,272 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,274 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:30,274 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:30,298 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-11-20 12:18:30,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,312 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,319 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 [2022-11-20 12:18:30,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 12:18:30,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,340 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:30,340 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:30,352 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,364 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,381 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 [2022-11-20 12:18:30,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 12:18:30,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,401 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:30,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,401 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,402 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:30,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:30,422 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,434 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,443 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 [2022-11-20 12:18:30,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 12:18:30,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:30,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,459 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:30,459 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:30,468 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,487 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,492 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 [2022-11-20 12:18:30,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 12:18:30,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:30,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:30,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:30,516 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,528 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,537 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 [2022-11-20 12:18:30,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 12:18:30,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:30,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:30,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:30,570 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,581 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,589 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 [2022-11-20 12:18:30,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,602 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,602 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,602 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 12:18:30,604 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:30,605 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:30,626 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,637 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,646 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 [2022-11-20 12:18:30,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 12:18:30,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,664 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:30,664 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:30,677 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,688 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,692 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 [2022-11-20 12:18:30,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 12:18:30,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,712 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:30,712 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:30,730 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,740 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,747 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 [2022-11-20 12:18:30,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 12:18:30,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,775 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:30,775 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:30,794 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,802 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,807 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 [2022-11-20 12:18:30,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 12:18:30,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,825 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:30,825 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:30,842 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,853 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,857 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 [2022-11-20 12:18:30,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 12:18:30,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:30,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,879 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:30,880 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:30,902 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:30,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:30,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:30,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:30,913 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:30,919 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 [2022-11-20 12:18:30,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 12:18:30,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:30,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:30,933 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 12:18:30,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:30,959 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2022-11-20 12:18:30,960 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2022-11-20 12:18:30,995 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:18:31,088 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2022-11-20 12:18:31,088 INFO L444 ModelExtractionUtils]: 4 out of 21 variables were initially zero. Simplification set additionally 14 variables to zero. [2022-11-20 12:18:31,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:31,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:31,135 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:31,183 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:18:31,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 12:18:31,214 INFO L438 nArgumentSynthesizer]: Removed 4 redundant supporting invariants from a total of 4. [2022-11-20 12:18:31,214 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:18:31,215 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~tmp~0#1.base) ULTIMATE.start_main_~tmp~0#1.offset)_1, v_rep(select (select #memory_int ULTIMATE.start_main_~maxId~0#1.base) ULTIMATE.start_main_~maxId~0#1.offset)_1) = -1*v_rep(select (select #memory_int ULTIMATE.start_main_~tmp~0#1.base) ULTIMATE.start_main_~tmp~0#1.offset)_1 + 1*v_rep(select (select #memory_int ULTIMATE.start_main_~maxId~0#1.base) ULTIMATE.start_main_~maxId~0#1.offset)_1 Supporting invariants [] [2022-11-20 12:18:31,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:31,351 INFO L156 tatePredicateManager]: 24 out of 24 supporting invariants were superfluous and have been removed [2022-11-20 12:18:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:31,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:18:31,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:31,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:18:31,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:31,502 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 12:18:31,504 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:31,556 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 16 transitions. Complement of second has 7 states. [2022-11-20 12:18:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 12:18:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2022-11-20 12:18:31,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2022-11-20 12:18:31,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:18:31,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-20 12:18:31,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:18:31,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2022-11-20 12:18:31,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:18:31,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2022-11-20 12:18:31,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:18:31,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2022-11-20 12:18:31,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-20 12:18:31,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-20 12:18:31,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2022-11-20 12:18:31,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:18:31,568 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-20 12:18:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2022-11-20 12:18:31,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 12:18:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:18:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-20 12:18:31,571 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-20 12:18:31,571 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-20 12:18:31,571 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 12:18:31,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2022-11-20 12:18:31,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:18:31,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:18:31,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:18:31,574 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:18:31,574 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:18:31,575 INFO L748 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 197#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 205#L552 assume main_#t~short9#1;call main_#t~mem7#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);main_#t~short9#1 := main_#t~mem7#1 < main_#t~mem8#1; 194#L552-2 assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 195#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 204#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 198#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 199#L556-2 [2022-11-20 12:18:31,575 INFO L750 eck$LassoCheckResult]: Loop: 199#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 202#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 206#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 199#L556-2 [2022-11-20 12:18:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029996, now seen corresponding path program 1 times [2022-11-20 12:18:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:31,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408865412] [2022-11-20 12:18:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:31,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:31,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:31,701 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:31,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:31,761 INFO L85 PathProgramCache]: Analyzing trace with hash 45842, now seen corresponding path program 3 times [2022-11-20 12:18:31,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:31,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245585540] [2022-11-20 12:18:31,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:31,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:31,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:31,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:31,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:31,812 INFO L85 PathProgramCache]: Analyzing trace with hash 658080967, now seen corresponding path program 1 times [2022-11-20 12:18:31,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:31,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585390087] [2022-11-20 12:18:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:31,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:31,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:31,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:33,987 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:18:33,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:18:33,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:18:33,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:18:33,987 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:18:33,988 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:33,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:18:33,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:18:33,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: GulwaniJainKoskinen-2009PLDI-Fig1-alloca-2.i_Iteration3_Lasso [2022-11-20 12:18:33,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:18:33,988 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:18:33,992 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:33,995 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:33,998 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,001 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,003 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,006 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,010 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,012 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,017 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,019 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,022 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,027 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,030 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,681 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,684 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,687 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,690 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,692 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,695 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,697 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:34,700 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:18:35,248 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:18:35,248 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:18:35,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,249 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,259 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 [2022-11-20 12:18:35,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 12:18:35,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:35,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,272 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,273 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:35,273 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:35,286 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,294 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-20 12:18:35,299 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 [2022-11-20 12:18:35,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,313 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:35,313 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:35,338 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,344 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,352 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 [2022-11-20 12:18:35,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-20 12:18:35,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:35,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:35,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:35,386 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,396 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,403 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 [2022-11-20 12:18:35,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 12:18:35,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:35,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,417 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:35,417 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:35,426 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,436 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 12:18:35,439 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 [2022-11-20 12:18:35,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,455 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:35,455 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:35,465 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,476 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,483 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 [2022-11-20 12:18:35,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:35,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,497 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 12:18:35,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-20 12:18:35,498 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-20 12:18:35,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:35,508 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,518 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,523 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 [2022-11-20 12:18:35,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-20 12:18:35,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:35,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:35,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:35,551 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,562 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,566 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 [2022-11-20 12:18:35,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-20 12:18:35,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,582 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:35,582 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:35,599 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,610 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,616 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 [2022-11-20 12:18:35,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-20 12:18:35,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:35,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:35,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:35,640 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,651 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,655 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 [2022-11-20 12:18:35,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-20 12:18:35,666 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,666 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:35,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,667 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:35,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:35,668 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,674 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-20 12:18:35,680 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 [2022-11-20 12:18:35,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:35,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:35,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:35,692 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,697 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-20 12:18:35,700 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 [2022-11-20 12:18:35,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:18:35,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:18:35,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:18:35,713 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-11-20 12:18:35,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,717 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-20 12:18:35,720 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 [2022-11-20 12:18:35,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,735 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:35,735 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:35,762 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,772 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,779 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 [2022-11-20 12:18:35,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-20 12:18:35,795 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:35,795 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:35,814 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,825 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-20 12:18:35,828 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 [2022-11-20 12:18:35,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,842 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,844 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:35,844 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:35,858 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,866 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,870 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 [2022-11-20 12:18:35,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-20 12:18:35,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,890 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:35,890 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:35,918 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:35,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,924 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,931 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 [2022-11-20 12:18:35,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-20 12:18:35,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:35,945 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:35,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:18:35,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:35,958 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 12:18:35,959 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 12:18:35,982 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:18:35,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-11-20 12:18:35,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:35,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:35,987 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:35,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-20 12:18:35,991 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 [2022-11-20 12:18:36,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:18:36,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:18:36,003 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-20 12:18:36,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:18:36,023 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2022-11-20 12:18:36,023 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2022-11-20 12:18:36,057 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:18:36,093 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2022-11-20 12:18:36,093 INFO L444 ModelExtractionUtils]: 7 out of 21 variables were initially zero. Simplification set additionally 11 variables to zero. [2022-11-20 12:18:36,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:18:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:36,096 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:18:36,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-20 12:18:36,102 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:18:36,114 INFO L438 nArgumentSynthesizer]: Removed 4 redundant supporting invariants from a total of 4. [2022-11-20 12:18:36,114 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:18:36,114 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~maxId~0#1.base) ULTIMATE.start_main_~maxId~0#1.offset)_2, v_rep(select (select #memory_int ULTIMATE.start_main_~tmp~0#1.base) ULTIMATE.start_main_~tmp~0#1.offset)_2) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~maxId~0#1.base) ULTIMATE.start_main_~maxId~0#1.offset)_2 - 1*v_rep(select (select #memory_int ULTIMATE.start_main_~tmp~0#1.base) ULTIMATE.start_main_~tmp~0#1.offset)_2 Supporting invariants [] [2022-11-20 12:18:36,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:36,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-20 12:18:36,247 INFO L156 tatePredicateManager]: 24 out of 24 supporting invariants were superfluous and have been removed [2022-11-20 12:18:36,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:36,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:18:36,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:36,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:18:36,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:36,363 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 12:18:36,363 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.5) 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) [2022-11-20 12:18:36,393 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 2.5) 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) Result 19 states and 24 transitions. Complement of second has 7 states. [2022-11-20 12:18:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 12:18:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) 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) [2022-11-20 12:18:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-20 12:18:36,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-20 12:18:36,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:18:36,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 3 letters. [2022-11-20 12:18:36,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:18:36,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 6 letters. [2022-11-20 12:18:36,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:18:36,399 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2022-11-20 12:18:36,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:18:36,401 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 24 transitions. [2022-11-20 12:18:36,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-20 12:18:36,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-20 12:18:36,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 24 transitions. [2022-11-20 12:18:36,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:18:36,402 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-11-20 12:18:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 24 transitions. [2022-11-20 12:18:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-20 12:18:36,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 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) [2022-11-20 12:18:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-11-20 12:18:36,405 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-11-20 12:18:36,405 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-11-20 12:18:36,406 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 12:18:36,406 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 24 transitions. [2022-11-20 12:18:36,406 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:18:36,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:18:36,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:18:36,407 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-20 12:18:36,408 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:18:36,408 INFO L748 eck$LassoCheckResult]: Stem: 377#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 378#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 386#L552 assume main_#t~short9#1;call main_#t~mem7#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);main_#t~short9#1 := main_#t~mem7#1 < main_#t~mem8#1; 375#L552-2 assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 376#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 390#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 388#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 387#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 385#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 379#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 380#L556-2 [2022-11-20 12:18:36,408 INFO L750 eck$LassoCheckResult]: Loop: 380#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 383#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 389#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 380#L556-2 [2022-11-20 12:18:36,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:36,409 INFO L85 PathProgramCache]: Analyzing trace with hash 658080969, now seen corresponding path program 2 times [2022-11-20 12:18:36,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:36,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433218861] [2022-11-20 12:18:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:36,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:36,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:36,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433218861] [2022-11-20 12:18:36,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433218861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:18:36,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040789855] [2022-11-20 12:18:36,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:18:36,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:18:36,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:36,987 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:18:36,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-20 12:18:37,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:18:37,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:18:37,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:18:37,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:37,174 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:18:37,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 12:18:37,215 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:18:37,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:18:37,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:18:37,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:18:37,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:37,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2022-11-20 12:18:37,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:18:37,680 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:18:37,681 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:18:37,705 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 12:18:37,706 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 79 treesize of output 74 [2022-11-20 12:18:37,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:18:37,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-11-20 12:18:37,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 12:18:37,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-11-20 12:18:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:37,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:38,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040789855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:18:38,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:18:38,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-20 12:18:38,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785019397] [2022-11-20 12:18:38,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:38,069 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:18:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash 45842, now seen corresponding path program 4 times [2022-11-20 12:18:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:38,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039878975] [2022-11-20 12:18:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:38,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:38,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:38,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:18:38,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:18:38,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=162, Unknown=4, NotChecked=0, Total=210 [2022-11-20 12:18:38,215 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. cyclomatic complexity: 8 Second operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 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) [2022-11-20 12:18:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:38,288 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-11-20 12:18:38,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 30 transitions. [2022-11-20 12:18:38,289 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-20 12:18:38,290 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 28 transitions. [2022-11-20 12:18:38,290 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-11-20 12:18:38,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-11-20 12:18:38,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2022-11-20 12:18:38,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:18:38,291 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-20 12:18:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2022-11-20 12:18:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-11-20 12:18:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-11-20 12:18:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-20 12:18:38,294 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-20 12:18:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:18:38,295 INFO L428 stractBuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-20 12:18:38,295 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 12:18:38,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 26 transitions. [2022-11-20 12:18:38,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-20 12:18:38,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:18:38,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:18:38,297 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1] [2022-11-20 12:18:38,297 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2022-11-20 12:18:38,297 INFO L748 eck$LassoCheckResult]: Stem: 496#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 497#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 505#L552 assume main_#t~short9#1;call main_#t~mem7#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);main_#t~short9#1 := main_#t~mem7#1 < main_#t~mem8#1; 494#L552-2 assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 495#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 508#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 507#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 506#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 503#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 500#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 501#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 504#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 498#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 499#L556-2 [2022-11-20 12:18:38,297 INFO L750 eck$LassoCheckResult]: Loop: 499#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 502#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 512#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 513#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 515#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 514#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 499#L556-2 [2022-11-20 12:18:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1635602290, now seen corresponding path program 2 times [2022-11-20 12:18:38,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:38,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142238146] [2022-11-20 12:18:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:38,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:38,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:38,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142238146] [2022-11-20 12:18:38,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142238146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:18:38,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474914786] [2022-11-20 12:18:38,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:18:38,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:18:38,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:38,975 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:18:38,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-20 12:18:39,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:18:39,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:18:39,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-20 12:18:39,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:39,141 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 12:18:39,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 12:18:39,179 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-20 12:18:39,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 71 [2022-11-20 12:18:39,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:18:39,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:18:39,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-11-20 12:18:39,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:18:39,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:18:39,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:39,289 INFO L321 Elim1Store]: treesize reduction 4, result has 55.6 percent of original size [2022-11-20 12:18:39,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 12:18:39,452 INFO L321 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2022-11-20 12:18:39,453 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 38 treesize of output 48 [2022-11-20 12:18:39,502 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 12:18:39,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 18 [2022-11-20 12:18:39,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-11-20 12:18:39,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 42 [2022-11-20 12:18:39,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2022-11-20 12:18:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:39,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:40,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474914786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:18:40,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:18:40,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2022-11-20 12:18:40,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693871263] [2022-11-20 12:18:40,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:40,509 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:18:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:40,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1365695075, now seen corresponding path program 1 times [2022-11-20 12:18:40,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:40,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682157442] [2022-11-20 12:18:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:40,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:40,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:40,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:40,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:18:40,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:18:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-11-20 12:18:40,785 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. cyclomatic complexity: 7 Second operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 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) [2022-11-20 12:18:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:41,348 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2022-11-20 12:18:41,348 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 52 transitions. [2022-11-20 12:18:41,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:18:41,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 43 states and 48 transitions. [2022-11-20 12:18:41,351 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-11-20 12:18:41,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-11-20 12:18:41,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 48 transitions. [2022-11-20 12:18:41,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:18:41,351 INFO L218 hiAutomatonCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-11-20 12:18:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 48 transitions. [2022-11-20 12:18:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28. [2022-11-20 12:18:41,354 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) [2022-11-20 12:18:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-20 12:18:41,355 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-20 12:18:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:18:41,356 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-20 12:18:41,356 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 12:18:41,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 32 transitions. [2022-11-20 12:18:41,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:18:41,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:18:41,357 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:18:41,358 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 2, 2, 1, 1, 1, 1] [2022-11-20 12:18:41,358 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2022-11-20 12:18:41,358 INFO L748 eck$LassoCheckResult]: Stem: 688#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 689#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 696#L552 assume main_#t~short9#1;call main_#t~mem7#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);main_#t~short9#1 := main_#t~mem7#1 < main_#t~mem8#1; 686#L552-2 assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 687#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 694#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 690#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 691#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 713#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 712#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 711#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 709#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 710#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 708#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 707#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 706#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 701#L556-2 [2022-11-20 12:18:41,358 INFO L750 eck$LassoCheckResult]: Loop: 701#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 704#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 697#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 698#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 705#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 703#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 700#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 702#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 699#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 701#L556-2 [2022-11-20 12:18:41,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:41,359 INFO L85 PathProgramCache]: Analyzing trace with hash 176108201, now seen corresponding path program 3 times [2022-11-20 12:18:41,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:41,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982593722] [2022-11-20 12:18:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:41,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:42,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982593722] [2022-11-20 12:18:42,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982593722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:18:42,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105140753] [2022-11-20 12:18:42,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:18:42,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:18:42,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:42,451 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:18:42,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-20 12:18:42,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 12:18:42,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:18:42,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 12:18:42,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:42,617 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 12:18:42,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 12:18:42,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 12:18:42,659 INFO L321 Elim1Store]: treesize reduction 34, result has 34.6 percent of original size [2022-11-20 12:18:42,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 70 [2022-11-20 12:18:42,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:18:42,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:18:42,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:18:42,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 63 [2022-11-20 12:18:42,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:18:42,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2022-11-20 12:18:42,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2022-11-20 12:18:42,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:18:42,820 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:18:42,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 12:18:42,983 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 12:18:42,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:18:42,996 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:18:42,997 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-20 12:18:43,141 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:18:43,142 INFO L350 Elim1Store]: Elim1 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 44 treesize of output 41 [2022-11-20 12:18:43,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 12:18:43,273 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:18:43,273 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-20 12:18:43,503 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:18:43,503 INFO L350 Elim1Store]: Elim1 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 72 treesize of output 46 [2022-11-20 12:18:43,636 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:18:43,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 52 treesize of output 24 [2022-11-20 12:18:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:18:43,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:44,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105140753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:18:44,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:18:44,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 29 [2022-11-20 12:18:44,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309665955] [2022-11-20 12:18:44,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:44,831 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:18:44,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash -803259212, now seen corresponding path program 2 times [2022-11-20 12:18:44,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:44,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367469408] [2022-11-20 12:18:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:44,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:44,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:44,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:45,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:18:45,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 12:18:45,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=756, Unknown=10, NotChecked=0, Total=870 [2022-11-20 12:18:45,443 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. cyclomatic complexity: 7 Second operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 30 states have internal predecessors, (44), 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) [2022-11-20 12:18:46,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:46,067 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2022-11-20 12:18:46,067 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 49 transitions. [2022-11-20 12:18:46,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:18:46,069 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 33 states and 37 transitions. [2022-11-20 12:18:46,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-20 12:18:46,069 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-20 12:18:46,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 37 transitions. [2022-11-20 12:18:46,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:18:46,069 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-20 12:18:46,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 37 transitions. [2022-11-20 12:18:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2022-11-20 12:18:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 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) [2022-11-20 12:18:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-20 12:18:46,072 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-20 12:18:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:18:46,073 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-20 12:18:46,073 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-20 12:18:46,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 31 transitions. [2022-11-20 12:18:46,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:18:46,074 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:18:46,074 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:18:46,075 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 3, 2, 1, 1, 1, 1] [2022-11-20 12:18:46,075 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2022-11-20 12:18:46,075 INFO L748 eck$LassoCheckResult]: Stem: 899#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 900#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 907#L552 assume main_#t~short9#1;call main_#t~mem7#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);main_#t~short9#1 := main_#t~mem7#1 < main_#t~mem8#1; 897#L552-2 assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 898#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 905#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 903#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 904#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 906#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 901#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 902#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 924#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 923#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 922#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 920#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 921#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 919#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 916#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 917#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 913#L556-2 [2022-11-20 12:18:46,075 INFO L750 eck$LassoCheckResult]: Loop: 913#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 908#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 909#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 910#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 918#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 915#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 912#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 914#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 911#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 913#L556-2 [2022-11-20 12:18:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:46,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1816884246, now seen corresponding path program 4 times [2022-11-20 12:18:46,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:46,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842118571] [2022-11-20 12:18:46,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:46,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:46,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:46,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842118571] [2022-11-20 12:18:46,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842118571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:18:46,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110053975] [2022-11-20 12:18:46,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:18:46,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:18:46,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:46,983 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:18:46,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-20 12:18:47,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:18:47,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:18:47,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-20 12:18:47,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:47,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-20 12:18:47,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:18:47,141 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:18:47,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 12:18:47,285 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-20 12:18:47,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 12:18:47,323 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 12:18:47,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 16 treesize of output 18 [2022-11-20 12:18:47,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2022-11-20 12:18:47,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2022-11-20 12:18:47,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:18:47,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 42 [2022-11-20 12:18:47,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 41 [2022-11-20 12:18:48,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 23 [2022-11-20 12:18:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:48,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:18:48,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:18:48,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 42 [2022-11-20 12:18:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:49,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110053975] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:18:49,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:18:49,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-11-20 12:18:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527058381] [2022-11-20 12:18:49,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:18:49,227 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:18:49,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:49,228 INFO L85 PathProgramCache]: Analyzing trace with hash -803259212, now seen corresponding path program 3 times [2022-11-20 12:18:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:49,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951361856] [2022-11-20 12:18:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:49,240 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:18:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:18:49,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:18:49,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:18:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:18:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1024, Unknown=17, NotChecked=0, Total=1190 [2022-11-20 12:18:49,847 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. cyclomatic complexity: 6 Second operand has 35 states, 34 states have (on average 1.588235294117647) internal successors, (54), 35 states have internal predecessors, (54), 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) [2022-11-20 12:18:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:18:51,135 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2022-11-20 12:18:51,135 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 55 transitions. [2022-11-20 12:18:51,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:18:51,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 49 states and 53 transitions. [2022-11-20 12:18:51,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2022-11-20 12:18:51,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2022-11-20 12:18:51,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 53 transitions. [2022-11-20 12:18:51,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:18:51,137 INFO L218 hiAutomatonCegarLoop]: Abstraction has 49 states and 53 transitions. [2022-11-20 12:18:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 53 transitions. [2022-11-20 12:18:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2022-11-20 12:18:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 38 states have internal predecessors, (43), 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) [2022-11-20 12:18:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-20 12:18:51,141 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-20 12:18:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:18:51,143 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-20 12:18:51,143 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-20 12:18:51,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 43 transitions. [2022-11-20 12:18:51,144 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:18:51,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:18:51,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:18:51,145 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 7, 5, 2, 1, 1, 1, 1] [2022-11-20 12:18:51,145 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2022-11-20 12:18:51,145 INFO L748 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1151#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 1159#L552 assume main_#t~short9#1;call main_#t~mem7#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);main_#t~short9#1 := main_#t~mem7#1 < main_#t~mem8#1; 1148#L552-2 assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 1149#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1167#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1168#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1166#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1165#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1164#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 1162#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1163#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1181#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1157#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1158#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1179#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1180#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1186#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1185#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1184#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1174#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1175#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 1183#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1182#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1169#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1153#L556-2 [2022-11-20 12:18:51,145 INFO L750 eck$LassoCheckResult]: Loop: 1153#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1156#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1160#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1178#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1176#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1173#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1171#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1172#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1170#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 1153#L556-2 [2022-11-20 12:18:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:18:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash 201819590, now seen corresponding path program 5 times [2022-11-20 12:18:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:18:51,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291458538] [2022-11-20 12:18:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:18:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:18:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:18:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:52,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:18:52,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291458538] [2022-11-20 12:18:52,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291458538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:18:52,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382177120] [2022-11-20 12:18:52,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:18:52,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:18:52,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:18:52,743 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:18:52,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-20 12:18:52,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-20 12:18:52,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:18:52,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 12:18:52,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:18:52,943 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-20 12:18:52,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:18:53,142 INFO L321 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2022-11-20 12:18:53,142 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 51 treesize of output 57 [2022-11-20 12:18:53,402 INFO L321 Elim1Store]: treesize reduction 20, result has 50.0 percent of original size [2022-11-20 12:18:53,403 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 66 treesize of output 56 [2022-11-20 12:18:53,717 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-20 12:18:53,718 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 69 treesize of output 47 [2022-11-20 12:18:54,059 INFO L321 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2022-11-20 12:18:54,060 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 86 treesize of output 56 [2022-11-20 12:18:54,248 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-20 12:18:54,248 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 58 treesize of output 40 [2022-11-20 12:18:54,392 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 12:18:54,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 54 treesize of output 30 [2022-11-20 12:18:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:18:54,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:19:12,079 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-20 12:19:12,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 1 [2022-11-20 12:19:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:12,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382177120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:19:12,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:19:12,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 41 [2022-11-20 12:19:12,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150250170] [2022-11-20 12:19:12,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:19:12,083 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:19:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash -803259212, now seen corresponding path program 4 times [2022-11-20 12:19:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:12,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874331764] [2022-11-20 12:19:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:19:12,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:19:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:19:12,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:19:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:13,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 12:19:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 12:19:13,039 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. cyclomatic complexity: 7 Second operand has 41 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 41 states have internal predecessors, (66), 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) [2022-11-20 12:19:15,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:15,852 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-11-20 12:19:15,852 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 68 transitions. [2022-11-20 12:19:15,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:19:15,857 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 48 transitions. [2022-11-20 12:19:15,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-20 12:19:15,857 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-11-20 12:19:15,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 48 transitions. [2022-11-20 12:19:15,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:19:15,858 INFO L218 hiAutomatonCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-11-20 12:19:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 48 transitions. [2022-11-20 12:19:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2022-11-20 12:19:15,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 41 states have internal predecessors, (46), 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) [2022-11-20 12:19:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-11-20 12:19:15,869 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-11-20 12:19:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:19:15,870 INFO L428 stractBuchiCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-11-20 12:19:15,870 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-20 12:19:15,871 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 46 transitions. [2022-11-20 12:19:15,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:19:15,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:19:15,872 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:19:15,872 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 8, 6, 2, 1, 1, 1, 1] [2022-11-20 12:19:15,873 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2022-11-20 12:19:15,873 INFO L748 eck$LassoCheckResult]: Stem: 1470#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1471#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 1479#L552 assume main_#t~short9#1;call main_#t~mem7#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);main_#t~short9#1 := main_#t~mem7#1 < main_#t~mem8#1; 1468#L552-2 assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 1469#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1509#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1508#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1477#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1478#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1482#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1498#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1497#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1472#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 1473#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1476#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1474#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1475#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1507#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1506#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1505#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1504#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1502#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1499#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1496#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1495#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 1494#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1492#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1483#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1484#L556-2 [2022-11-20 12:19:15,873 INFO L750 eck$LassoCheckResult]: Loop: 1484#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1493#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1491#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1490#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1489#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1488#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1486#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1487#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1485#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 1484#L556-2 [2022-11-20 12:19:15,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1653865051, now seen corresponding path program 6 times [2022-11-20 12:19:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:15,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270414814] [2022-11-20 12:19:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:15,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:17,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:17,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270414814] [2022-11-20 12:19:17,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270414814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:17,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938293988] [2022-11-20 12:19:17,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:19:17,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:17,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:17,455 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:17,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-20 12:19:17,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-20 12:19:17,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:19:17,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 12:19:17,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:17,715 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 12:19:17,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 12:19:17,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:19:17,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:19:17,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:19:17,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2022-11-20 12:19:17,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:19:17,821 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:19:17,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 12:19:18,068 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 12:19:18,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:19:18,091 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:18,092 INFO L350 Elim1Store]: Elim1 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 62 treesize of output 59 [2022-11-20 12:19:18,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:19:18,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-11-20 12:19:18,222 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 28 [2022-11-20 12:19:18,418 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:18,419 INFO L350 Elim1Store]: Elim1 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 40 treesize of output 39 [2022-11-20 12:19:18,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2022-11-20 12:19:18,547 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 12:19:18,548 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:19:18,884 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 12:19:18,884 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 42 [2022-11-20 12:19:19,067 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 12:19:19,068 INFO L350 Elim1Store]: Elim1 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 56 treesize of output 42 [2022-11-20 12:19:19,228 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 12:19:19,228 INFO L350 Elim1Store]: Elim1 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 56 treesize of output 42 [2022-11-20 12:19:19,386 INFO L321 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-11-20 12:19:19,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 50 treesize of output 31 [2022-11-20 12:19:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:19,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:19:20,445 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:19:20,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 42 [2022-11-20 12:19:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:21,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938293988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:19:21,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:19:21,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2022-11-20 12:19:21,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013614085] [2022-11-20 12:19:21,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:19:21,508 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 12:19:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:21,509 INFO L85 PathProgramCache]: Analyzing trace with hash -803259212, now seen corresponding path program 5 times [2022-11-20 12:19:21,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:21,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763923868] [2022-11-20 12:19:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:21,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:19:21,520 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:19:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:19:21,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:19:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:19:22,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 12:19:22,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1396, Unknown=30, NotChecked=0, Total=1640 [2022-11-20 12:19:22,317 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. cyclomatic complexity: 7 Second operand has 41 states, 41 states have (on average 1.853658536585366) internal successors, (76), 41 states have internal predecessors, (76), 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) [2022-11-20 12:19:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:19:24,247 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-11-20 12:19:24,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 58 transitions. [2022-11-20 12:19:24,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:19:24,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 53 states and 56 transitions. [2022-11-20 12:19:24,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2022-11-20 12:19:24,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2022-11-20 12:19:24,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 56 transitions. [2022-11-20 12:19:24,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:19:24,250 INFO L218 hiAutomatonCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-11-20 12:19:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 56 transitions. [2022-11-20 12:19:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2022-11-20 12:19:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 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) [2022-11-20 12:19:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-11-20 12:19:24,255 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-11-20 12:19:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 12:19:24,257 INFO L428 stractBuchiCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-11-20 12:19:24,257 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-20 12:19:24,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 46 transitions. [2022-11-20 12:19:24,258 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-20 12:19:24,258 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:19:24,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:19:24,260 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 8, 2, 1, 1, 1, 1] [2022-11-20 12:19:24,260 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2022-11-20 12:19:24,260 INFO L748 eck$LassoCheckResult]: Stem: 1808#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 1809#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~short9#1, main_#t~malloc10#1.base, main_#t~malloc10#1.offset, main_#t~mem11#1, main_#t~mem15#1, main_#t~mem16#1, main_#t~mem17#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~nondet14#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, main_~id~0#1.base, main_~id~0#1.offset, main_~maxId~0#1.base, main_~maxId~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~id~0#1.base, main_~id~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~maxId~0#1.base, main_~maxId~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~id~0#1.base, main_~id~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(main_#t~nondet5#1, main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);havoc main_#t~nondet5#1;call main_#t~mem6#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);main_#t~short9#1 := 0 <= main_#t~mem6#1; 1818#L552 assume main_#t~short9#1;call main_#t~mem7#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4);main_#t~short9#1 := main_#t~mem7#1 < main_#t~mem8#1; 1806#L552-2 assume main_#t~short9#1;havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~short9#1;call main_#t~malloc10#1.base, main_#t~malloc10#1.offset := #Ultimate.allocOnStack(4);main_~tmp~0#1.base, main_~tmp~0#1.offset := main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call main_#t~mem11#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4);call write~int(1 + main_#t~mem11#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem11#1; 1807#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1829#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1828#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1827#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1825#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1826#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1824#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1823#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1822#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 1820#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1821#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1845#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1816#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1817#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1812#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1813#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1843#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1842#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1841#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1837#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1838#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1836#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1834#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1810#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 1811#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1848#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1830#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1814#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1815#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1819#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1833#L556-2 [2022-11-20 12:19:24,261 INFO L750 eck$LassoCheckResult]: Loop: 1833#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1847#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1846#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1844#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1840#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1839#L556 assume main_#t~mem15#1 < main_#t~mem16#1;havoc main_#t~mem15#1;havoc main_#t~mem16#1;call main_#t~mem17#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call write~int(1 + main_#t~mem17#1, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);havoc main_#t~mem17#1; 1832#L556-2 call main_#t~mem12#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~id~0#1.base, main_~id~0#1.offset, 4); 1835#L555-1 assume !!(main_#t~mem12#1 != main_#t~mem13#1 && 0 != main_#t~nondet14#1);havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~nondet14#1;call main_#t~mem15#1 := read~int(main_~tmp~0#1.base, main_~tmp~0#1.offset, 4);call main_#t~mem16#1 := read~int(main_~maxId~0#1.base, main_~maxId~0#1.offset, 4); 1831#L556 assume !(main_#t~mem15#1 < main_#t~mem16#1);havoc main_#t~mem15#1;havoc main_#t~mem16#1;call write~int(0, main_~tmp~0#1.base, main_~tmp~0#1.offset, 4); 1833#L556-2 [2022-11-20 12:19:24,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:19:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash 296921417, now seen corresponding path program 7 times [2022-11-20 12:19:24,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:19:24,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84354209] [2022-11-20 12:19:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:19:24,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:19:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 50 proven. 82 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:19:27,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:19:27,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84354209] [2022-11-20 12:19:27,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84354209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:19:27,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312210811] [2022-11-20 12:19:27,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:19:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:19:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:19:27,095 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:19:27,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-20 12:19:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:19:27,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-20 12:19:27,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:19:27,304 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:19:27,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 12:19:27,372 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 12:19:27,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 12:19:27,431 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-20 12:19:27,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 71 [2022-11-20 12:19:27,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:19:27,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 12:19:27,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 12:19:27,779 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 12:19:27,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 12:19:27,801 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:27,801 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 41 treesize of output 35 [2022-11-20 12:19:27,996 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:27,996 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 40 [2022-11-20 12:19:28,294 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:28,295 INFO L350 Elim1Store]: Elim1 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 53 treesize of output 48 [2022-11-20 12:19:28,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2022-11-20 12:19:28,486 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:28,486 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:19:28,670 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:28,671 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 38 [2022-11-20 12:19:28,875 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:28,876 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 38 [2022-11-20 12:19:29,286 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:29,287 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 42 [2022-11-20 12:19:29,829 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:29,830 INFO L350 Elim1Store]: Elim1 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 88 treesize of output 54 [2022-11-20 12:19:30,420 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:30,421 INFO L350 Elim1Store]: Elim1 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 90 treesize of output 52 [2022-11-20 12:19:30,985 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:19:30,985 INFO L350 Elim1Store]: Elim1 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 64 treesize of output 42 [2022-11-20 12:19:31,191 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:19:31,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 63 treesize of output 31 [2022-11-20 12:19:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 26 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:19:31,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:19:36,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:19:36,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 181 [2022-11-20 12:20:06,555 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-20 12:20:06,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 101 [2022-11-20 12:20:06,556 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-20 12:20:06,557 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_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/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") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:898) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:772) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:346) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkFeasibilityAndComputeInterpolants(LassoCheck.java:881) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkStemFeasibility(LassoCheck.java:836) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:751) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.cegar.AbstractBuchiCegarLoop.runCegarLoop(AbstractBuchiCegarLoop.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.runCegarLoops(BuchiAutomizerObserver.java:136) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:157) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:341) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 44 more [2022-11-20 12:20:06,560 INFO L158 Benchmark]: Toolchain (without parser) took 101930.16ms. Allocated memory was 163.6MB in the beginning and 371.2MB in the end (delta: 207.6MB). Free memory was 114.1MB in the beginning and 231.6MB in the end (delta: -117.5MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB. [2022-11-20 12:20:06,560 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:20:06,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.00ms. Allocated memory is still 163.6MB. Free memory was 113.5MB in the beginning and 98.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 12:20:06,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.74ms. Allocated memory is still 163.6MB. Free memory was 98.3MB in the beginning and 96.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:20:06,561 INFO L158 Benchmark]: Boogie Preprocessor took 62.12ms. Allocated memory is still 163.6MB. Free memory was 96.7MB in the beginning and 95.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:20:06,561 INFO L158 Benchmark]: RCFGBuilder took 528.71ms. Allocated memory is still 163.6MB. Free memory was 95.2MB in the beginning and 82.7MB in the end (delta: 12.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 12:20:06,562 INFO L158 Benchmark]: BuchiAutomizer took 100839.66ms. Allocated memory was 163.6MB in the beginning and 371.2MB in the end (delta: 207.6MB). Free memory was 82.7MB in the beginning and 231.6MB in the end (delta: -148.8MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2022-11-20 12:20:06,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.00ms. Allocated memory is still 163.6MB. Free memory was 113.5MB in the beginning and 98.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.74ms. Allocated memory is still 163.6MB. Free memory was 98.3MB in the beginning and 96.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.12ms. Allocated memory is still 163.6MB. Free memory was 96.7MB in the beginning and 95.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 528.71ms. Allocated memory is still 163.6MB. Free memory was 95.2MB in the beginning and 82.7MB in the end (delta: 12.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 100839.66ms. Allocated memory was 163.6MB in the beginning and 371.2MB in the end (delta: 207.6MB). Free memory was 82.7MB in the beginning and 231.6MB in the end (delta: -148.8MB). Peak memory consumption was 62.4MB. 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_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/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") de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/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") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-20 12:20:06,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:06,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-11-20 12:20:06,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-11-20 12:20:07,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-11-20 12:20:07,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-11-20 12:20:07,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-11-20 12:20:07,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] 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_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_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_7441e46f-50ee-420a-8d81-d532a030acd7/bin/uautomizer-ug76WZFUDN/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")