./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72f1855a37efd37cce37062be898d726c14815dc11ea2d177e7b762da78d5470 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:35:58,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:35:58,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:35:58,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:35:58,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:35:58,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:35:58,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:35:58,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:35:58,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:35:58,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:35:58,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:35:58,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:35:58,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:35:58,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:35:58,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:35:58,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:35:58,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:35:58,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:35:58,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:35:58,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:35:58,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:35:58,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:35:58,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:35:58,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:35:58,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:35:58,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:35:58,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:35:58,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:35:58,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:35:58,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:35:58,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:35:58,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:35:58,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:35:58,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:35:58,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:35:58,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:35:58,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:35:58,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:35:58,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:35:58,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:35:58,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:35:58,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:35:58,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:35:58,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:35:58,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:35:58,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:35:58,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:35:58,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:35:58,425 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:35:58,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:35:58,425 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:35:58,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:35:58,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:35:58,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:35:58,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:35:58,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:35:58,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:35:58,427 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:35:58,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:35:58,428 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:35:58,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:35:58,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:35:58,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:35:58,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:35:58,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:35:58,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:35:58,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:35:58,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:35:58,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:35:58,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:35:58,430 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:35:58,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:35:58,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:35:58,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:35:58,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72f1855a37efd37cce37062be898d726c14815dc11ea2d177e7b762da78d5470 [2021-11-02 22:35:58,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:35:58,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:35:58,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:35:58,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:35:58,805 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:35:58,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c [2021-11-02 22:35:58,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/data/f47aa834a/497a1e10155c40aeaaeb5695ffbf6fb9/FLAG4d8f4a38d [2021-11-02 22:35:59,420 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:35:59,421 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c [2021-11-02 22:35:59,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/data/f47aa834a/497a1e10155c40aeaaeb5695ffbf6fb9/FLAG4d8f4a38d [2021-11-02 22:35:59,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/data/f47aa834a/497a1e10155c40aeaaeb5695ffbf6fb9 [2021-11-02 22:35:59,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:35:59,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:35:59,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:35:59,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:35:59,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:35:59,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:59" (1/1) ... [2021-11-02 22:35:59,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e038529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:59, skipping insertion in model container [2021-11-02 22:35:59,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:59" (1/1) ... [2021-11-02 22:35:59,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:35:59,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:36:00,036 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c[458,471] [2021-11-02 22:36:00,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:36:00,061 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:36:00,083 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c[458,471] [2021-11-02 22:36:00,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:36:00,121 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:36:00,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00 WrapperNode [2021-11-02 22:36:00,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:36:00,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:36:00,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:36:00,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:36:00,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:36:00,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:36:00,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:36:00,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:36:00,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:36:00,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:36:00,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:36:00,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:36:00,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (1/1) ... [2021-11-02 22:36:00,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:36:00,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:00,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:36:00,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:36:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:36:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:36:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:36:00,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:36:00,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:36:00,501 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-02 22:36:00,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:00 BoogieIcfgContainer [2021-11-02 22:36:00,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:36:00,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:36:00,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:36:00,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:36:00,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:35:59" (1/3) ... [2021-11-02 22:36:00,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2365a753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:00, skipping insertion in model container [2021-11-02 22:36:00,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:36:00" (2/3) ... [2021-11-02 22:36:00,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2365a753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:00, skipping insertion in model container [2021-11-02 22:36:00,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:00" (3/3) ... [2021-11-02 22:36:00,514 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound1.c [2021-11-02 22:36:00,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:36:00,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-02 22:36:00,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:36:00,594 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:36:00,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-02 22:36:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:36:00,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:00,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:00,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-11-02 22:36:00,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:00,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162855604] [2021-11-02 22:36:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:00,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:00,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:00,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162855604] [2021-11-02 22:36:00,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162855604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:00,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:00,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:36:00,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267414390] [2021-11-02 22:36:00,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:36:00,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:00,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:36:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:36:00,849 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-11-02 22:36:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:00,866 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-11-02 22:36:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:36:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) Word has length 7 [2021-11-02 22:36:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:00,878 INFO L225 Difference]: With dead ends: 31 [2021-11-02 22:36:00,878 INFO L226 Difference]: Without dead ends: 13 [2021-11-02 22:36:00,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:36:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-02 22:36:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-02 22:36:00,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-02 22:36:00,917 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-11-02 22:36:00,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:00,917 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-02 22:36:00,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-11-02 22:36:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-02 22:36:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:36:00,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:00,919 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:00,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:36:00,920 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:00,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-11-02 22:36:00,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:00,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56445914] [2021-11-02 22:36:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:00,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:00,944 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:36:00,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180911923] [2021-11-02 22:36:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:00,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:00,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:00,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:00,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:36:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:01,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:36:01,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:01,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:01,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56445914] [2021-11-02 22:36:01,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:36:01,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180911923] [2021-11-02 22:36:01,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180911923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:01,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:01,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:36:01,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967990045] [2021-11-02 22:36:01,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:36:01,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:01,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:36:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:36:01,276 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. 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) [2021-11-02 22:36:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:01,348 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-11-02 22:36:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:36:01,354 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 7 [2021-11-02 22:36:01,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:01,355 INFO L225 Difference]: With dead ends: 23 [2021-11-02 22:36:01,355 INFO L226 Difference]: Without dead ends: 17 [2021-11-02 22:36:01,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:36:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-02 22:36:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-02 22:36:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-02 22:36:01,361 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-11-02 22:36:01,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:01,361 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-02 22:36:01,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-11-02 22:36:01,362 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-02 22:36:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:36:01,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:01,363 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:01,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:36:01,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-02 22:36:01,578 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2021-11-02 22:36:01,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:01,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040455963] [2021-11-02 22:36:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:01,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:01,602 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:36:01,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830153746] [2021-11-02 22:36:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:01,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:01,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:01,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:01,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:36:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:01,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:36:01,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:01,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:01,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040455963] [2021-11-02 22:36:01,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:36:01,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830153746] [2021-11-02 22:36:01,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830153746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:36:01,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:36:01,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 22:36:01,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060918773] [2021-11-02 22:36:01,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:36:01,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:01,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:36:01,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:36:01,842 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:02,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:02,033 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-11-02 22:36:02,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:36:02,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-02 22:36:02,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:02,035 INFO L225 Difference]: With dead ends: 26 [2021-11-02 22:36:02,035 INFO L226 Difference]: Without dead ends: 20 [2021-11-02 22:36:02,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:36:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-02 22:36:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-11-02 22:36:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-02 22:36:02,041 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2021-11-02 22:36:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:02,042 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-02 22:36:02,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:02,042 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-02 22:36:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-02 22:36:02,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:02,043 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:02,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:36:02,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:02,270 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:36:02,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 2 times [2021-11-02 22:36:02,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:02,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256043025] [2021-11-02 22:36:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:02,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:02,293 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:36:02,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274722809] [2021-11-02 22:36:02,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:36:02,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:02,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:36:02,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:36:02,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:36:02,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:36:02,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:36:02,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:36:02,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:02,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:02,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256043025] [2021-11-02 22:36:02,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:36:02,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274722809] [2021-11-02 22:36:02,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274722809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:02,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:02,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:36:02,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631548928] [2021-11-02 22:36:02,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:36:02,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:36:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:36:02,685 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:02,781 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-02 22:36:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:36:02,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-02 22:36:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:02,783 INFO L225 Difference]: With dead ends: 19 [2021-11-02 22:36:02,783 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 22:36:02,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:36:02,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 22:36:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 22:36:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 22:36:02,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-02 22:36:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:02,787 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 22:36:02,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:36:02,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 22:36:02,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 22:36:02,791 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:36:02,792 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:36:02,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:36:03,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:36:03,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 22:36:03,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:36:03,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:36:03,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:36:03,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:36:03,114 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-02 22:36:03,115 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~k~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= ULTIMATE.start_main_~k~0 1))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 (= ULTIMATE.start_main_~y~0 1) (<= 1 ULTIMATE.start_main_~c~0)) (and (= ULTIMATE.start_main_~y~0 0) .cse0 (= ULTIMATE.start_main_~x~0 0) .cse1 .cse2 (<= 0 ULTIMATE.start_main_~c~0)))) [2021-11-02 22:36:03,115 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-02 22:36:03,115 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2021-11-02 22:36:03,115 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-11-02 22:36:03,115 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-11-02 22:36:03,116 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-11-02 22:36:03,116 INFO L860 garLoopResultBuilder]: At program point L38(lines 17 39) the Hoare annotation is: true [2021-11-02 22:36:03,116 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-02 22:36:03,116 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-02 22:36:03,116 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-02 22:36:03,117 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-02 22:36:03,117 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-11-02 22:36:03,117 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~k~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= ULTIMATE.start_main_~k~0 1))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~y~0 1) (<= 1 ULTIMATE.start_main_~c~0)) (and (= ULTIMATE.start_main_~y~0 0) .cse0 (= ULTIMATE.start_main_~x~0 0) .cse1 .cse2 .cse3 (<= 0 ULTIMATE.start_main_~c~0)))) [2021-11-02 22:36:03,117 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-11-02 22:36:03,118 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-11-02 22:36:03,118 INFO L860 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2021-11-02 22:36:03,122 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-02 22:36:03,123 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:36:03,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:36:03 BoogieIcfgContainer [2021-11-02 22:36:03,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:36:03,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:36:03,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:36:03,142 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:36:03,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:00" (3/4) ... [2021-11-02 22:36:03,146 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:36:03,156 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-02 22:36:03,156 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 22:36:03,156 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:36:03,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:36:03,202 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:36:03,202 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:36:03,204 INFO L168 Benchmark]: Toolchain (without parser) took 3405.50 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 55.7 MB in the beginning and 85.1 MB in the end (delta: -29.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:36:03,205 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 71.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:36:03,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.83 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 55.5 MB in the beginning and 109.6 MB in the end (delta: -54.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:36:03,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 134.2 MB. Free memory was 109.6 MB in the beginning and 108.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:36:03,207 INFO L168 Benchmark]: Boogie Preprocessor took 25.52 ms. Allocated memory is still 134.2 MB. Free memory was 108.0 MB in the beginning and 107.4 MB in the end (delta: 635.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:36:03,208 INFO L168 Benchmark]: RCFGBuilder took 322.04 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 97.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:36:03,209 INFO L168 Benchmark]: TraceAbstraction took 2635.35 ms. Allocated memory is still 134.2 MB. Free memory was 97.0 MB in the beginning and 87.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:36:03,209 INFO L168 Benchmark]: Witness Printer took 60.22 ms. Allocated memory is still 134.2 MB. Free memory was 87.9 MB in the beginning and 85.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:36:03,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 71.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.83 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 55.5 MB in the beginning and 109.6 MB in the end (delta: -54.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 134.2 MB. Free memory was 109.6 MB in the beginning and 108.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.52 ms. Allocated memory is still 134.2 MB. Free memory was 108.0 MB in the beginning and 107.4 MB in the end (delta: 635.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 322.04 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 97.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2635.35 ms. Allocated memory is still 134.2 MB. Free memory was 97.0 MB in the beginning and 87.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 60.22 ms. Allocated memory is still 134.2 MB. Free memory was 87.9 MB in the beginning and 85.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 17 SDslu, 43 SDs, 0 SdLazy, 45 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 93 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 150 SizeOfPredicates, 8 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 7/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((0 <= k && x == y * y) && cond == 1) && 1 <= cond) && k <= 1) && y == 1) && 1 <= c) || ((((((y == 0 && 0 <= k) && x == 0) && cond == 1) && 1 <= cond) && k <= 1) && 0 <= c) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((0 <= k && x == y * y) && cond == 1) && 1 <= cond) && k <= 1) && y == 1) && 1 <= c) || (((((y == 0 && 0 <= k) && x == 0) && cond == 1) && k <= 1) && 0 <= c) RESULT: Ultimate proved your program to be correct! [2021-11-02 22:36:03,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_438dfd14-fa32-4e4d-9caa-90fffb7c8a1b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE