./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:56:58,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:56:58,184 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-29 02:56:58,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:56:58,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:56:58,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:56:58,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:56:58,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:56:58,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:56:58,221 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:56:58,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:56:58,222 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:56:58,223 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:56:58,223 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 02:56:58,224 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 02:56:58,224 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 02:56:58,225 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 02:56:58,225 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 02:56:58,226 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 02:56:58,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:56:58,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 02:56:58,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:56:58,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:56:58,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 02:56:58,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 02:56:58,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 02:56:58,230 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:56:58,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:56:58,230 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 02:56:58,231 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:56:58,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:56:58,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:56:58,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:56:58,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:56:58,233 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 02:56:58,234 INFO L153 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_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 [2023-11-29 02:56:58,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:56:58,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:56:58,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:56:58,485 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:56:58,485 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:56:58,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-restricted-15/NO_04.c [2023-11-29 02:57:01,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:57:01,352 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:57:01,353 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/sv-benchmarks/c/termination-restricted-15/NO_04.c [2023-11-29 02:57:01,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/data/08614c8c0/eb82f7f9b55e478fa24a3542f864ad16/FLAG4ebd1523d [2023-11-29 02:57:01,375 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/data/08614c8c0/eb82f7f9b55e478fa24a3542f864ad16 [2023-11-29 02:57:01,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:57:01,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:57:01,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:57:01,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:57:01,387 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:57:01,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30697745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01, skipping insertion in model container [2023-11-29 02:57:01,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,412 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:57:01,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:57:01,578 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:57:01,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:57:01,611 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:57:01,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01 WrapperNode [2023-11-29 02:57:01,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:57:01,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:57:01,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:57:01,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:57:01,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,643 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-11-29 02:57:01,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:57:01,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:57:01,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:57:01,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:57:01,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,657 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,663 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 02:57:01,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:57:01,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:57:01,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:57:01,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:57:01,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (1/1) ... [2023-11-29 02:57:01,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:01,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:01,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:01,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 02:57:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:57:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:57:01,824 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:57:01,826 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:57:01,904 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:57:01,914 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:57:01,914 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 02:57:01,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:57:01 BoogieIcfgContainer [2023-11-29 02:57:01,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:57:01,918 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 02:57:01,918 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 02:57:01,922 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 02:57:01,923 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:57:01,924 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 02:57:01" (1/3) ... [2023-11-29 02:57:01,925 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f7899a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 02:57:01, skipping insertion in model container [2023-11-29 02:57:01,925 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:57:01,925 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:01" (2/3) ... [2023-11-29 02:57:01,926 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f7899a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 02:57:01, skipping insertion in model container [2023-11-29 02:57:01,926 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:57:01,926 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:57:01" (3/3) ... [2023-11-29 02:57:01,928 INFO L332 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2023-11-29 02:57:01,987 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 02:57:01,987 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 02:57:01,987 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 02:57:01,987 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 02:57:01,988 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 02:57:01,988 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 02:57:01,988 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 02:57:01,988 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 02:57:01,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2023-11-29 02:57:02,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-29 02:57:02,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:57:02,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:57:02,018 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 02:57:02,018 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-29 02:57:02,018 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 02:57:02,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2023-11-29 02:57:02,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-29 02:57:02,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:57:02,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:57:02,021 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 02:57:02,021 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-29 02:57:02,028 INFO L748 eck$LassoCheckResult]: Stem: 14#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 6#L15-2true [2023-11-29 02:57:02,028 INFO L750 eck$LassoCheckResult]: Loop: 6#L15-2true assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 9#L18-2true assume !(main_~j~0#1 < main_~a~0#1); 12#L18-3true main_~i~0#1 := 1 + main_~i~0#1; 6#L15-2true [2023-11-29 02:57:02,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 02:57:02,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:02,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22230736] [2023-11-29 02:57:02,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:02,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:02,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:57:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:02,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:57:02,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash 40983, now seen corresponding path program 1 times [2023-11-29 02:57:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:02,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533244462] [2023-11-29 02:57:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:02,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:57:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:02,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:57:02,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash 28699925, now seen corresponding path program 1 times [2023-11-29 02:57:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:02,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453018687] [2023-11-29 02:57:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:02,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:02,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453018687] [2023-11-29 02:57:02,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453018687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:02,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:57:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077504519] [2023-11-29 02:57:02,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:02,354 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:57:02,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:57:02,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:57:02,355 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:57:02,355 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:57:02,355 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,355 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:57:02,355 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:57:02,356 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2023-11-29 02:57:02,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:57:02,356 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:57:02,374 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:57:02,385 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:57:02,389 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:57:02,393 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:57:02,471 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:57:02,472 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:57:02,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 02:57:02,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:57:02,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:57:02,511 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:57:02,511 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:57:02,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-29 02:57:02,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 02:57:02,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:57:02,525 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:57:02,545 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:57:02,545 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:57:02,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 02:57:02,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 02:57:02,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:57:02,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:57:02,567 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:57:02,568 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0#1=0} Honda state: {ULTIMATE.start_main_~j~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:57:02,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 02:57:02,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 02:57:02,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:57:02,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:57:02,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 02:57:02,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 02:57:02,599 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:57:02,599 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:57:02,715 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:57:02,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 02:57:02,719 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:57:02,719 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:57:02,719 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:57:02,719 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:57:02,719 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:57:02,719 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,719 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:57:02,720 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:57:02,720 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2023-11-29 02:57:02,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:57:02,720 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:57:02,722 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:57:02,726 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:57:02,729 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:57:02,734 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:57:02,798 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:57:02,802 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:57:02,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 02:57:02,809 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 [2023-11-29 02:57:02,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:57:02,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:57:02,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:57:02,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:57:02,825 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:57:02,826 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:57:02,833 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:57:02,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 02:57:02,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,839 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 02:57:02,841 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 [2023-11-29 02:57:02,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:57:02,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:57:02,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:57:02,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:57:02,856 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:57:02,856 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:57:02,896 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:57:02,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-29 02:57:02,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 02:57:02,905 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 [2023-11-29 02:57:02,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:57:02,919 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:57:02,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:57:02,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:57:02,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:57:02,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:57:02,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:57:02,923 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:57:02,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 02:57:02,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,929 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:02,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 02:57:02,932 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 [2023-11-29 02:57:02,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:57:02,945 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:57:02,945 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:57:02,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:57:02,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:57:02,948 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:57:02,948 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:57:02,952 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:57:02,978 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:57:02,979 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 02:57:02,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:57:02,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:02,997 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:03,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 02:57:03,002 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:57:03,002 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:57:03,002 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:57:03,002 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-29 02:57:03,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-29 02:57:03,010 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:57:03,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:57:03,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,053 WARN L260 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:57:03,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:03,150 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-29 02:57:03,151 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,267 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 59 states and 101 transitions. Complement of second has 10 states. [2023-11-29 02:57:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-29 02:57:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2023-11-29 02:57:03,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 63 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-29 02:57:03,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:57:03,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 63 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-29 02:57:03,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:57:03,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 63 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-29 02:57:03,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:57:03,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 101 transitions. [2023-11-29 02:57:03,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-11-29 02:57:03,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 38 states and 55 transitions. [2023-11-29 02:57:03,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2023-11-29 02:57:03,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-29 02:57:03,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 55 transitions. [2023-11-29 02:57:03,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:57:03,291 INFO L218 hiAutomatonCegarLoop]: Abstraction has 38 states and 55 transitions. [2023-11-29 02:57:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 55 transitions. [2023-11-29 02:57:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2023-11-29 02:57:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 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) [2023-11-29 02:57:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2023-11-29 02:57:03,320 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 36 transitions. [2023-11-29 02:57:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:03,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:03,324 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:03,360 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2023-11-29 02:57:03,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2023-11-29 02:57:03,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-11-29 02:57:03,363 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 26 transitions. [2023-11-29 02:57:03,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2023-11-29 02:57:03,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2023-11-29 02:57:03,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2023-11-29 02:57:03,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:03,364 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-11-29 02:57:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2023-11-29 02:57:03,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2023-11-29 02:57:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) 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) [2023-11-29 02:57:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2023-11-29 02:57:03,366 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2023-11-29 02:57:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:57:03,368 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2023-11-29 02:57:03,368 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 02:57:03,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2023-11-29 02:57:03,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 02:57:03,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:57:03,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:57:03,369 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 02:57:03,369 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:57:03,369 INFO L748 eck$LassoCheckResult]: Stem: 195#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 192#L15-2 [2023-11-29 02:57:03,370 INFO L750 eck$LassoCheckResult]: Loop: 192#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 189#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 190#L20-2 assume !(main_~k~0#1 >= 0); 193#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 194#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 191#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 192#L15-2 [2023-11-29 02:57:03,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,370 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-29 02:57:03,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060134449] [2023-11-29 02:57:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:57:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:57:03,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1221756439, now seen corresponding path program 1 times [2023-11-29 02:57:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108395796] [2023-11-29 02:57:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:03,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:03,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108395796] [2023-11-29 02:57:03,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108395796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:03,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:03,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:57:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200760398] [2023-11-29 02:57:03,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:03,440 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:57:03,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:03,441 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:03,472 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2023-11-29 02:57:03,473 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2023-11-29 02:57:03,473 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2023-11-29 02:57:03,474 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2023-11-29 02:57:03,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-11-29 02:57:03,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-29 02:57:03,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2023-11-29 02:57:03,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:03,475 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 24 transitions. [2023-11-29 02:57:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2023-11-29 02:57:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2023-11-29 02:57:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2023-11-29 02:57:03,477 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-11-29 02:57:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:57:03,478 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-11-29 02:57:03,478 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 02:57:03,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2023-11-29 02:57:03,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-29 02:57:03,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:57:03,479 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:57:03,480 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 02:57:03,480 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:03,480 INFO L748 eck$LassoCheckResult]: Stem: 234#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 235#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 233#L15-2 [2023-11-29 02:57:03,480 INFO L750 eck$LassoCheckResult]: Loop: 233#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 226#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 227#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 228#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 229#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 236#L20-2 assume !(main_~k~0#1 >= 0); 230#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 231#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 232#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 233#L15-2 [2023-11-29 02:57:03,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,481 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-29 02:57:03,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250727590] [2023-11-29 02:57:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:57:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:57:03,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1352067341, now seen corresponding path program 1 times [2023-11-29 02:57:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668577692] [2023-11-29 02:57:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:03,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668577692] [2023-11-29 02:57:03,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668577692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:03,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:03,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:57:03,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163798586] [2023-11-29 02:57:03,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:03,549 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:57:03,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:03,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:03,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:03,550 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:03,586 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2023-11-29 02:57:03,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2023-11-29 02:57:03,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-29 02:57:03,588 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 19 transitions. [2023-11-29 02:57:03,588 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2023-11-29 02:57:03,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2023-11-29 02:57:03,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2023-11-29 02:57:03,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:03,588 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-11-29 02:57:03,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2023-11-29 02:57:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-29 02:57:03,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 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) [2023-11-29 02:57:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2023-11-29 02:57:03,590 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-11-29 02:57:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:57:03,592 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-11-29 02:57:03,592 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 02:57:03,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2023-11-29 02:57:03,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-29 02:57:03,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:57:03,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:57:03,593 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 02:57:03,593 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:03,593 INFO L748 eck$LassoCheckResult]: Stem: 271#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 272#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 269#L15-2 [2023-11-29 02:57:03,594 INFO L750 eck$LassoCheckResult]: Loop: 269#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 263#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 264#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 265#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 261#L25-2 assume !(main_~m~0#1 >= 0); 262#L25-3 main_~l~0#1 := 1 + main_~l~0#1; 270#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 273#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 274#L20-2 assume !(main_~k~0#1 >= 0); 266#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 267#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 268#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 269#L15-2 [2023-11-29 02:57:03,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,594 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-29 02:57:03,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707059586] [2023-11-29 02:57:03,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:57:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:57:03,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1603093127, now seen corresponding path program 1 times [2023-11-29 02:57:03,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452205305] [2023-11-29 02:57:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:57:03,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:03,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452205305] [2023-11-29 02:57:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452205305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:03,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:03,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:57:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971560340] [2023-11-29 02:57:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:03,671 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:57:03,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:57:03,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:57:03,672 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:57:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:03,702 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2023-11-29 02:57:03,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2023-11-29 02:57:03,703 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 02:57:03,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 7 transitions. [2023-11-29 02:57:03,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-29 02:57:03,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-29 02:57:03,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2023-11-29 02:57:03,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:57:03,704 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-29 02:57:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2023-11-29 02:57:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-29 02:57:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 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) [2023-11-29 02:57:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-29 02:57:03,705 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-29 02:57:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:57:03,706 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-29 02:57:03,706 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 02:57:03,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2023-11-29 02:57:03,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 02:57:03,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:57:03,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:57:03,707 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:57:03,707 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 02:57:03,707 INFO L748 eck$LassoCheckResult]: Stem: 298#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 299#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 300#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 296#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 297#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 295#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 294#L25-2 [2023-11-29 02:57:03,707 INFO L750 eck$LassoCheckResult]: Loop: 294#L25-2 assume !!(main_~m~0#1 >= 0);main_~m~0#1 := main_~m~0#1; 294#L25-2 [2023-11-29 02:57:03,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash 889698581, now seen corresponding path program 1 times [2023-11-29 02:57:03,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205256656] [2023-11-29 02:57:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,715 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:57:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:57:03,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,721 INFO L85 PathProgramCache]: Analyzing trace with hash 78, now seen corresponding path program 1 times [2023-11-29 02:57:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634430478] [2023-11-29 02:57:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:57:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:57:03,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1810852282, now seen corresponding path program 1 times [2023-11-29 02:57:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451876677] [2023-11-29 02:57:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:03,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:57:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:57:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:57:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:57:03,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 02:57:03 BoogieIcfgContainer [2023-11-29 02:57:03,878 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 02:57:03,878 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:57:03,879 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:57:03,879 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:57:03,879 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:57:01" (3/4) ... [2023-11-29 02:57:03,881 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 02:57:03,924 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:57:03,924 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:57:03,925 INFO L158 Benchmark]: Toolchain (without parser) took 2545.08ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 84.3MB in the end (delta: 44.1MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2023-11-29 02:57:03,925 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:57:03,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.12ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 118.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 02:57:03,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.04ms. Allocated memory is still 174.1MB. Free memory was 118.8MB in the beginning and 117.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:57:03,926 INFO L158 Benchmark]: Boogie Preprocessor took 30.44ms. Allocated memory is still 174.1MB. Free memory was 117.4MB in the beginning and 115.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:57:03,927 INFO L158 Benchmark]: RCFGBuilder took 240.96ms. Allocated memory is still 174.1MB. Free memory was 115.9MB in the beginning and 106.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 02:57:03,927 INFO L158 Benchmark]: BuchiAutomizer took 1960.06ms. Allocated memory is still 174.1MB. Free memory was 106.3MB in the beginning and 86.4MB in the end (delta: 19.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2023-11-29 02:57:03,928 INFO L158 Benchmark]: Witness Printer took 45.38ms. Allocated memory is still 174.1MB. Free memory was 85.5MB in the beginning and 84.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:57:03,930 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.12ms. Allocated memory is still 174.1MB. Free memory was 128.5MB in the beginning and 118.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.04ms. Allocated memory is still 174.1MB. Free memory was 118.8MB in the beginning and 117.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.44ms. Allocated memory is still 174.1MB. Free memory was 117.4MB in the beginning and 115.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 240.96ms. Allocated memory is still 174.1MB. Free memory was 115.9MB in the beginning and 106.9MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1960.06ms. Allocated memory is still 174.1MB. Free memory was 106.3MB in the beginning and 86.4MB in the end (delta: 19.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Witness Printer took 45.38ms. Allocated memory is still 174.1MB. Free memory was 85.5MB in the beginning and 84.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function (-1 * i) and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 108 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 38 mSDtfsCounter, 96 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 25]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 VAL [i=0] [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 VAL [a=2, i=0, j=0] [L18] COND TRUE j < a [L19] k = i+j+3 VAL [a=2, i=0, j=0, k=3] [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 VAL [a=2, b=7, i=0, j=0, k=3, l=0] [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 VAL [a=2, b=7, i=0, j=0, k=3, l=0, m=1003] Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 VAL [i=0] [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 VAL [a=2, i=0, j=0] [L18] COND TRUE j < a [L19] k = i+j+3 VAL [a=2, i=0, j=0, k=3] [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 VAL [a=2, b=7, i=0, j=0, k=3, l=0] [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 VAL [a=2, b=7, i=0, j=0, k=3, l=0, m=1003] Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 02:57:03,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-29 02:57:04,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c22dd968-ae42-4051-b636-c2e95c48a6c9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)