./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_14-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_14-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e1f6c8a80d54f6d4b7b413368cc99af6eca243b930331d178961d851b56afbd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:06:31,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:06:31,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 23:06:31,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:06:31,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:06:31,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:06:31,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:06:31,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:06:31,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:06:31,323 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:06:31,323 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:06:31,324 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 23:06:31,325 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 23:06:31,325 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 23:06:31,326 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 23:06:31,326 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 23:06:31,327 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 23:06:31,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:06:31,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 23:06:31,329 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:06:31,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:06:31,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:06:31,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:06:31,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 23:06:31,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 23:06:31,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 23:06:31,334 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:06:31,334 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:06:31,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:06:31,335 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 23:06:31,336 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:06:31,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:06:31,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:06:31,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:06:31,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:06:31,340 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 23:06:31,340 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_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e1f6c8a80d54f6d4b7b413368cc99af6eca243b930331d178961d851b56afbd [2023-11-06 23:06:31,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:06:31,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:06:31,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:06:31,669 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:06:31,670 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:06:31,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/locks/test_locks_14-1.c [2023-11-06 23:06:34,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:06:35,151 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:06:35,151 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/sv-benchmarks/c/locks/test_locks_14-1.c [2023-11-06 23:06:35,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/data/f7e4ae32b/f0e7022747da4cb29bf72f12465c534a/FLAGae4361089 [2023-11-06 23:06:35,177 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/data/f7e4ae32b/f0e7022747da4cb29bf72f12465c534a [2023-11-06 23:06:35,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:06:35,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:06:35,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:35,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:06:35,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:06:35,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fef5cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35, skipping insertion in model container [2023-11-06 23:06:35,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,219 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:35,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:35,402 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:06:35,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:35,444 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:06:35,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35 WrapperNode [2023-11-06 23:06:35,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:35,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:35,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:06:35,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:06:35,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,491 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 182 [2023-11-06 23:06:35,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:35,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:06:35,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:06:35,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:06:35,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:06:35,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:06:35,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:06:35,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:06:35,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (1/1) ... [2023-11-06 23:06:35,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:06:35,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:35,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:06:35,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 23:06:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:06:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:06:35,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:06:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:06:35,691 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:06:35,693 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:06:36,077 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:06:36,093 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:06:36,098 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:06:36,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:36 BoogieIcfgContainer [2023-11-06 23:06:36,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:06:36,103 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 23:06:36,103 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 23:06:36,108 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 23:06:36,109 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:06:36,109 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 11:06:35" (1/3) ... [2023-11-06 23:06:36,110 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61cbec3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:06:36, skipping insertion in model container [2023-11-06 23:06:36,110 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:06:36,111 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:35" (2/3) ... [2023-11-06 23:06:36,113 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61cbec3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:06:36, skipping insertion in model container [2023-11-06 23:06:36,113 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:06:36,113 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:36" (3/3) ... [2023-11-06 23:06:36,120 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_14-1.c [2023-11-06 23:06:36,194 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 23:06:36,194 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 23:06:36,195 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 23:06:36,195 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 23:06:36,195 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 23:06:36,196 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 23:06:36,196 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 23:06:36,197 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 23:06:36,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 52 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 51 states have internal predecessors, (96), 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) [2023-11-06 23:06:36,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2023-11-06 23:06:36,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:36,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:36,259 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:36,260 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:36,260 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 23:06:36,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 52 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 51 states have internal predecessors, (96), 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) [2023-11-06 23:06:36,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2023-11-06 23:06:36,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:36,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:36,273 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:36,273 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:36,283 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 34#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 36#L211-1true [2023-11-06 23:06:36,296 INFO L750 eck$LassoCheckResult]: Loop: 36#L211-1true assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 46#L55true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 21#L88true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 11#L88-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 32#L92-1true assume !(0 != main_~p3~0#1); 3#L96-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 6#L100-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 49#L104-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 12#L108-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 52#L112-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 26#L116-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 39#L120-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 33#L124-1true assume !(0 != main_~p11~0#1); 15#L128-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 48#L132-1true assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 42#L136-1true assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 38#L140-1true assume !(0 != main_~p1~0#1); 16#L146-1true assume !(0 != main_~p2~0#1); 30#L151-1true assume !(0 != main_~p3~0#1); 28#L156-1true assume !(0 != main_~p4~0#1); 4#L161-1true assume !(0 != main_~p5~0#1); 10#L166-1true assume !(0 != main_~p6~0#1); 23#L171-1true assume !(0 != main_~p7~0#1); 19#L176-1true assume !(0 != main_~p8~0#1); 50#L181-1true assume !(0 != main_~p9~0#1); 20#L186-1true assume !(0 != main_~p10~0#1); 37#L191-1true assume !(0 != main_~p11~0#1); 51#L196-1true assume !(0 != main_~p12~0#1); 24#L201-1true assume !(0 != main_~p13~0#1); 13#L206-1true assume !(0 != main_~p14~0#1); 36#L211-1true [2023-11-06 23:06:36,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 23:06:36,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:36,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6015464] [2023-11-06 23:06:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:36,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:36,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:36,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:36,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1221430905, now seen corresponding path program 1 times [2023-11-06 23:06:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:36,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653676272] [2023-11-06 23:06:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:36,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:36,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:36,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653676272] [2023-11-06 23:06:36,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653676272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:36,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:36,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:36,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631040198] [2023-11-06 23:06:36,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:36,683 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:36,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:36,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:36,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:36,739 INFO L87 Difference]: Start difference. First operand has 52 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 51 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:36,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:36,817 INFO L93 Difference]: Finished difference Result 97 states and 177 transitions. [2023-11-06 23:06:36,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 177 transitions. [2023-11-06 23:06:36,833 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2023-11-06 23:06:36,842 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 89 states and 143 transitions. [2023-11-06 23:06:36,843 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2023-11-06 23:06:36,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 89 [2023-11-06 23:06:36,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 143 transitions. [2023-11-06 23:06:36,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:36,846 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 143 transitions. [2023-11-06 23:06:36,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 143 transitions. [2023-11-06 23:06:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-06 23:06:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 89 states have (on average 1.6067415730337078) internal successors, (143), 88 states have internal predecessors, (143), 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) [2023-11-06 23:06:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 143 transitions. [2023-11-06 23:06:36,880 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 143 transitions. [2023-11-06 23:06:36,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:36,885 INFO L428 stractBuchiCegarLoop]: Abstraction has 89 states and 143 transitions. [2023-11-06 23:06:36,886 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 23:06:36,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 143 transitions. [2023-11-06 23:06:36,888 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2023-11-06 23:06:36,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:36,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:36,895 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:36,895 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:36,895 INFO L748 eck$LassoCheckResult]: Stem: 205#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 173#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 174#L211-1 [2023-11-06 23:06:36,896 INFO L750 eck$LassoCheckResult]: Loop: 174#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 220#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 219#L88 assume !(0 != main_~p1~0#1); 184#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 160#L92-1 assume !(0 != main_~p3~0#1); 158#L96-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 159#L100-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 168#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 185#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 186#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 206#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 183#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 171#L124-1 assume !(0 != main_~p11~0#1); 172#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 191#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 214#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 213#L140-1 assume !(0 != main_~p1~0#1); 194#L146-1 assume !(0 != main_~p2~0#1); 196#L151-1 assume !(0 != main_~p3~0#1); 170#L156-1 assume !(0 != main_~p4~0#1); 161#L161-1 assume !(0 != main_~p5~0#1); 163#L166-1 assume !(0 != main_~p6~0#1); 178#L171-1 assume !(0 != main_~p7~0#1); 198#L176-1 assume !(0 != main_~p8~0#1); 200#L181-1 assume !(0 != main_~p9~0#1); 193#L186-1 assume !(0 != main_~p10~0#1); 180#L191-1 assume !(0 != main_~p11~0#1); 176#L196-1 assume !(0 != main_~p12~0#1); 224#L201-1 assume !(0 != main_~p13~0#1); 222#L206-1 assume !(0 != main_~p14~0#1); 174#L211-1 [2023-11-06 23:06:36,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-06 23:06:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:36,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970723381] [2023-11-06 23:06:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:36,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:36,912 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:36,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 711957815, now seen corresponding path program 1 times [2023-11-06 23:06:36,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:36,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720035215] [2023-11-06 23:06:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:36,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:36,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:36,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720035215] [2023-11-06 23:06:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720035215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:36,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:36,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702909919] [2023-11-06 23:06:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:36,979 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:36,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:36,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:36,981 INFO L87 Difference]: Start difference. First operand 89 states and 143 transitions. cyclomatic complexity: 56 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:37,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:37,002 INFO L93 Difference]: Finished difference Result 174 states and 278 transitions. [2023-11-06 23:06:37,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174 states and 278 transitions. [2023-11-06 23:06:37,006 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2023-11-06 23:06:37,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174 states to 174 states and 278 transitions. [2023-11-06 23:06:37,009 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 174 [2023-11-06 23:06:37,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2023-11-06 23:06:37,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 278 transitions. [2023-11-06 23:06:37,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:37,012 INFO L218 hiAutomatonCegarLoop]: Abstraction has 174 states and 278 transitions. [2023-11-06 23:06:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 278 transitions. [2023-11-06 23:06:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-11-06 23:06:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 174 states have (on average 1.5977011494252873) internal successors, (278), 173 states have internal predecessors, (278), 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) [2023-11-06 23:06:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 278 transitions. [2023-11-06 23:06:37,030 INFO L240 hiAutomatonCegarLoop]: Abstraction has 174 states and 278 transitions. [2023-11-06 23:06:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:37,032 INFO L428 stractBuchiCegarLoop]: Abstraction has 174 states and 278 transitions. [2023-11-06 23:06:37,032 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 23:06:37,032 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 278 transitions. [2023-11-06 23:06:37,035 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2023-11-06 23:06:37,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:37,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:37,037 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:37,037 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:37,037 INFO L748 eck$LassoCheckResult]: Stem: 481#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 443#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 444#L211-1 [2023-11-06 23:06:37,038 INFO L750 eck$LassoCheckResult]: Loop: 444#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 505#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 503#L88 assume !(0 != main_~p1~0#1); 501#L88-2 assume !(0 != main_~p2~0#1); 498#L92-1 assume !(0 != main_~p3~0#1); 497#L96-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 435#L100-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 436#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 456#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 457#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 480#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 453#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 441#L124-1 assume !(0 != main_~p11~0#1); 442#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 463#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 488#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 486#L140-1 assume !(0 != main_~p1~0#1); 487#L146-1 assume !(0 != main_~p2~0#1); 485#L151-1 assume !(0 != main_~p3~0#1); 438#L156-1 assume !(0 != main_~p4~0#1); 430#L161-1 assume !(0 != main_~p5~0#1); 432#L166-1 assume !(0 != main_~p6~0#1); 446#L171-1 assume !(0 != main_~p7~0#1); 532#L176-1 assume !(0 != main_~p8~0#1); 530#L181-1 assume !(0 != main_~p9~0#1); 525#L186-1 assume !(0 != main_~p10~0#1); 522#L191-1 assume !(0 != main_~p11~0#1); 518#L196-1 assume !(0 != main_~p12~0#1); 514#L201-1 assume !(0 != main_~p13~0#1); 510#L206-1 assume !(0 != main_~p14~0#1); 444#L211-1 [2023-11-06 23:06:37,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-06 23:06:37,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361051012] [2023-11-06 23:06:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:37,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1659781447, now seen corresponding path program 1 times [2023-11-06 23:06:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496770071] [2023-11-06 23:06:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:37,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:37,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496770071] [2023-11-06 23:06:37,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496770071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:37,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:37,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:37,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543459215] [2023-11-06 23:06:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:37,185 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:37,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:37,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:37,188 INFO L87 Difference]: Start difference. First operand 174 states and 278 transitions. cyclomatic complexity: 108 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:37,234 INFO L93 Difference]: Finished difference Result 342 states and 542 transitions. [2023-11-06 23:06:37,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 342 states and 542 transitions. [2023-11-06 23:06:37,239 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2023-11-06 23:06:37,243 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 342 states to 342 states and 542 transitions. [2023-11-06 23:06:37,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 342 [2023-11-06 23:06:37,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 342 [2023-11-06 23:06:37,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 542 transitions. [2023-11-06 23:06:37,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:37,248 INFO L218 hiAutomatonCegarLoop]: Abstraction has 342 states and 542 transitions. [2023-11-06 23:06:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 542 transitions. [2023-11-06 23:06:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-11-06 23:06:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 342 states have (on average 1.5847953216374269) internal successors, (542), 341 states have internal predecessors, (542), 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) [2023-11-06 23:06:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 542 transitions. [2023-11-06 23:06:37,274 INFO L240 hiAutomatonCegarLoop]: Abstraction has 342 states and 542 transitions. [2023-11-06 23:06:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:37,275 INFO L428 stractBuchiCegarLoop]: Abstraction has 342 states and 542 transitions. [2023-11-06 23:06:37,275 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 23:06:37,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 342 states and 542 transitions. [2023-11-06 23:06:37,279 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2023-11-06 23:06:37,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:37,279 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:37,280 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:37,280 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:37,281 INFO L748 eck$LassoCheckResult]: Stem: 1001#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 965#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 966#L211-1 [2023-11-06 23:06:37,281 INFO L750 eck$LassoCheckResult]: Loop: 966#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 1131#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 1121#L88 assume !(0 != main_~p1~0#1); 1122#L88-2 assume !(0 != main_~p2~0#1); 1234#L92-1 assume !(0 != main_~p3~0#1); 1237#L96-1 assume !(0 != main_~p4~0#1); 1238#L100-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 1284#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1206#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1203#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1200#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1199#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1198#L124-1 assume !(0 != main_~p11~0#1); 1197#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1196#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1195#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 1193#L140-1 assume !(0 != main_~p1~0#1); 1194#L146-1 assume !(0 != main_~p2~0#1); 1205#L151-1 assume !(0 != main_~p3~0#1); 1202#L156-1 assume !(0 != main_~p4~0#1); 952#L161-1 assume !(0 != main_~p5~0#1); 954#L166-1 assume !(0 != main_~p6~0#1); 968#L171-1 assume !(0 != main_~p7~0#1); 989#L176-1 assume !(0 != main_~p8~0#1); 1155#L181-1 assume !(0 != main_~p9~0#1); 1152#L186-1 assume !(0 != main_~p10~0#1); 1151#L191-1 assume !(0 != main_~p11~0#1); 1147#L196-1 assume !(0 != main_~p12~0#1); 1143#L201-1 assume !(0 != main_~p13~0#1); 1141#L206-1 assume !(0 != main_~p14~0#1); 966#L211-1 [2023-11-06 23:06:37,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-06 23:06:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328956510] [2023-11-06 23:06:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:37,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1519232837, now seen corresponding path program 1 times [2023-11-06 23:06:37,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076480406] [2023-11-06 23:06:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:37,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:37,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076480406] [2023-11-06 23:06:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076480406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:37,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:37,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:37,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393148888] [2023-11-06 23:06:37,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:37,344 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:37,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:37,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:37,345 INFO L87 Difference]: Start difference. First operand 342 states and 542 transitions. cyclomatic complexity: 208 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:37,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:37,366 INFO L93 Difference]: Finished difference Result 674 states and 1058 transitions. [2023-11-06 23:06:37,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 674 states and 1058 transitions. [2023-11-06 23:06:37,374 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2023-11-06 23:06:37,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 674 states to 674 states and 1058 transitions. [2023-11-06 23:06:37,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 674 [2023-11-06 23:06:37,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 674 [2023-11-06 23:06:37,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 674 states and 1058 transitions. [2023-11-06 23:06:37,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:37,386 INFO L218 hiAutomatonCegarLoop]: Abstraction has 674 states and 1058 transitions. [2023-11-06 23:06:37,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states and 1058 transitions. [2023-11-06 23:06:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2023-11-06 23:06:37,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 674 states have (on average 1.5697329376854599) internal successors, (1058), 673 states have internal predecessors, (1058), 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) [2023-11-06 23:06:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1058 transitions. [2023-11-06 23:06:37,414 INFO L240 hiAutomatonCegarLoop]: Abstraction has 674 states and 1058 transitions. [2023-11-06 23:06:37,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:37,415 INFO L428 stractBuchiCegarLoop]: Abstraction has 674 states and 1058 transitions. [2023-11-06 23:06:37,416 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 23:06:37,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 674 states and 1058 transitions. [2023-11-06 23:06:37,420 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2023-11-06 23:06:37,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:37,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:37,422 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:37,422 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:37,422 INFO L748 eck$LassoCheckResult]: Stem: 2019#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1985#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 1986#L211-1 [2023-11-06 23:06:37,423 INFO L750 eck$LassoCheckResult]: Loop: 1986#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 2078#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 2052#L88 assume !(0 != main_~p1~0#1); 2053#L88-2 assume !(0 != main_~p2~0#1); 2294#L92-1 assume !(0 != main_~p3~0#1); 2290#L96-1 assume !(0 != main_~p4~0#1); 2285#L100-1 assume !(0 != main_~p5~0#1); 2284#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 2283#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2269#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 2267#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 2264#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 2265#L124-1 assume !(0 != main_~p11~0#1); 2268#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 2266#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 2263#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 2261#L140-1 assume !(0 != main_~p1~0#1); 2259#L146-1 assume !(0 != main_~p2~0#1); 2257#L151-1 assume !(0 != main_~p3~0#1); 2254#L156-1 assume !(0 != main_~p4~0#1); 2250#L161-1 assume !(0 != main_~p5~0#1); 2243#L166-1 assume !(0 != main_~p6~0#1); 2233#L171-1 assume !(0 != main_~p7~0#1); 2206#L176-1 assume !(0 != main_~p8~0#1); 2202#L181-1 assume !(0 != main_~p9~0#1); 2199#L186-1 assume !(0 != main_~p10~0#1); 2198#L191-1 assume !(0 != main_~p11~0#1); 2196#L196-1 assume !(0 != main_~p12~0#1); 2192#L201-1 assume !(0 != main_~p13~0#1); 2083#L206-1 assume !(0 != main_~p14~0#1); 1986#L211-1 [2023-11-06 23:06:37,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,423 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2023-11-06 23:06:37,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400377037] [2023-11-06 23:06:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,449 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:37,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1653246343, now seen corresponding path program 1 times [2023-11-06 23:06:37,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175853961] [2023-11-06 23:06:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:37,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:37,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175853961] [2023-11-06 23:06:37,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175853961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:37,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:37,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701503559] [2023-11-06 23:06:37,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:37,492 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:37,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:37,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:37,493 INFO L87 Difference]: Start difference. First operand 674 states and 1058 transitions. cyclomatic complexity: 400 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:37,515 INFO L93 Difference]: Finished difference Result 1330 states and 2066 transitions. [2023-11-06 23:06:37,515 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1330 states and 2066 transitions. [2023-11-06 23:06:37,528 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2023-11-06 23:06:37,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1330 states to 1330 states and 2066 transitions. [2023-11-06 23:06:37,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1330 [2023-11-06 23:06:37,542 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1330 [2023-11-06 23:06:37,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1330 states and 2066 transitions. [2023-11-06 23:06:37,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:37,545 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1330 states and 2066 transitions. [2023-11-06 23:06:37,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states and 2066 transitions. [2023-11-06 23:06:37,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2023-11-06 23:06:37,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1330 states have (on average 1.5533834586466166) internal successors, (2066), 1329 states have internal predecessors, (2066), 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) [2023-11-06 23:06:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 2066 transitions. [2023-11-06 23:06:37,581 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1330 states and 2066 transitions. [2023-11-06 23:06:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:37,583 INFO L428 stractBuchiCegarLoop]: Abstraction has 1330 states and 2066 transitions. [2023-11-06 23:06:37,583 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 23:06:37,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1330 states and 2066 transitions. [2023-11-06 23:06:37,592 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2023-11-06 23:06:37,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:37,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:37,593 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:37,594 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:37,594 INFO L748 eck$LassoCheckResult]: Stem: 4036#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 3997#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 3998#L211-1 [2023-11-06 23:06:37,594 INFO L750 eck$LassoCheckResult]: Loop: 3998#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 4125#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 4078#L88 assume !(0 != main_~p1~0#1); 4061#L88-2 assume !(0 != main_~p2~0#1); 4063#L92-1 assume !(0 != main_~p3~0#1); 4368#L96-1 assume !(0 != main_~p4~0#1); 4364#L100-1 assume !(0 != main_~p5~0#1); 4208#L104-1 assume !(0 != main_~p6~0#1); 4210#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 4200#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4201#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 4192#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 4193#L124-1 assume !(0 != main_~p11~0#1); 4184#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 4185#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 4176#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 4177#L140-1 assume !(0 != main_~p1~0#1); 4333#L146-1 assume !(0 != main_~p2~0#1); 4332#L151-1 assume !(0 != main_~p3~0#1); 4329#L156-1 assume !(0 != main_~p4~0#1); 4327#L161-1 assume !(0 != main_~p5~0#1); 4325#L166-1 assume !(0 != main_~p6~0#1); 4323#L171-1 assume !(0 != main_~p7~0#1); 4322#L176-1 assume !(0 != main_~p8~0#1); 4316#L181-1 assume !(0 != main_~p9~0#1); 4312#L186-1 assume !(0 != main_~p10~0#1); 4310#L191-1 assume !(0 != main_~p11~0#1); 4307#L196-1 assume !(0 != main_~p12~0#1); 4304#L201-1 assume !(0 != main_~p13~0#1); 4301#L206-1 assume !(0 != main_~p14~0#1); 3998#L211-1 [2023-11-06 23:06:37,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2023-11-06 23:06:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114547521] [2023-11-06 23:06:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:37,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash 836282619, now seen corresponding path program 1 times [2023-11-06 23:06:37,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008795297] [2023-11-06 23:06:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:37,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:37,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008795297] [2023-11-06 23:06:37,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008795297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:37,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:37,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:37,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993051537] [2023-11-06 23:06:37,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:37,640 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:37,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:37,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:37,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:37,642 INFO L87 Difference]: Start difference. First operand 1330 states and 2066 transitions. cyclomatic complexity: 768 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:37,671 INFO L93 Difference]: Finished difference Result 2626 states and 4034 transitions. [2023-11-06 23:06:37,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2626 states and 4034 transitions. [2023-11-06 23:06:37,701 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2023-11-06 23:06:37,725 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2626 states to 2626 states and 4034 transitions. [2023-11-06 23:06:37,725 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2626 [2023-11-06 23:06:37,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2626 [2023-11-06 23:06:37,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2626 states and 4034 transitions. [2023-11-06 23:06:37,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:37,733 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2626 states and 4034 transitions. [2023-11-06 23:06:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states and 4034 transitions. [2023-11-06 23:06:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2023-11-06 23:06:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2626 states have (on average 1.5361766945925361) internal successors, (4034), 2625 states have internal predecessors, (4034), 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) [2023-11-06 23:06:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4034 transitions. [2023-11-06 23:06:37,801 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2626 states and 4034 transitions. [2023-11-06 23:06:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:37,802 INFO L428 stractBuchiCegarLoop]: Abstraction has 2626 states and 4034 transitions. [2023-11-06 23:06:37,803 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-06 23:06:37,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2626 states and 4034 transitions. [2023-11-06 23:06:37,821 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2023-11-06 23:06:37,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:37,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:37,823 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:37,823 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:37,823 INFO L748 eck$LassoCheckResult]: Stem: 7997#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7958#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 7959#L211-1 [2023-11-06 23:06:37,823 INFO L750 eck$LassoCheckResult]: Loop: 7959#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 8292#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 8289#L88 assume !(0 != main_~p1~0#1); 8285#L88-2 assume !(0 != main_~p2~0#1); 8282#L92-1 assume !(0 != main_~p3~0#1); 8279#L96-1 assume !(0 != main_~p4~0#1); 8280#L100-1 assume !(0 != main_~p5~0#1); 8364#L104-1 assume !(0 != main_~p6~0#1); 8361#L108-1 assume !(0 != main_~p7~0#1); 8359#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 8357#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 8355#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 8353#L124-1 assume !(0 != main_~p11~0#1); 8351#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 8349#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 8347#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 8343#L140-1 assume !(0 != main_~p1~0#1); 8339#L146-1 assume !(0 != main_~p2~0#1); 8336#L151-1 assume !(0 != main_~p3~0#1); 8332#L156-1 assume !(0 != main_~p4~0#1); 8330#L161-1 assume !(0 != main_~p5~0#1); 8328#L166-1 assume !(0 != main_~p6~0#1); 8324#L171-1 assume !(0 != main_~p7~0#1); 8321#L176-1 assume !(0 != main_~p8~0#1); 8317#L181-1 assume !(0 != main_~p9~0#1); 8312#L186-1 assume !(0 != main_~p10~0#1); 8309#L191-1 assume !(0 != main_~p11~0#1); 8305#L196-1 assume !(0 != main_~p12~0#1); 8301#L201-1 assume !(0 != main_~p13~0#1); 8297#L206-1 assume !(0 != main_~p14~0#1); 7959#L211-1 [2023-11-06 23:06:37,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2023-11-06 23:06:37,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243343675] [2023-11-06 23:06:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:37,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:37,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1055137337, now seen corresponding path program 1 times [2023-11-06 23:06:37,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:37,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451169121] [2023-11-06 23:06:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:37,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:37,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451169121] [2023-11-06 23:06:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451169121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:37,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:37,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:37,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286077835] [2023-11-06 23:06:37,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:37,871 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:37,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:37,872 INFO L87 Difference]: Start difference. First operand 2626 states and 4034 transitions. cyclomatic complexity: 1472 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:37,918 INFO L93 Difference]: Finished difference Result 5186 states and 7874 transitions. [2023-11-06 23:06:37,919 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5186 states and 7874 transitions. [2023-11-06 23:06:37,972 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2023-11-06 23:06:38,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5186 states to 5186 states and 7874 transitions. [2023-11-06 23:06:38,019 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5186 [2023-11-06 23:06:38,024 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5186 [2023-11-06 23:06:38,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5186 states and 7874 transitions. [2023-11-06 23:06:38,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:38,033 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5186 states and 7874 transitions. [2023-11-06 23:06:38,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states and 7874 transitions. [2023-11-06 23:06:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5186. [2023-11-06 23:06:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 5186 states have (on average 1.5183185499421519) internal successors, (7874), 5185 states have internal predecessors, (7874), 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) [2023-11-06 23:06:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7874 transitions. [2023-11-06 23:06:38,205 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5186 states and 7874 transitions. [2023-11-06 23:06:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:38,208 INFO L428 stractBuchiCegarLoop]: Abstraction has 5186 states and 7874 transitions. [2023-11-06 23:06:38,208 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-06 23:06:38,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5186 states and 7874 transitions. [2023-11-06 23:06:38,245 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2023-11-06 23:06:38,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:38,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:38,247 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:38,248 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:38,248 INFO L748 eck$LassoCheckResult]: Stem: 15812#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 15777#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 15778#L211-1 [2023-11-06 23:06:38,249 INFO L750 eck$LassoCheckResult]: Loop: 15778#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 16220#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 16217#L88 assume !(0 != main_~p1~0#1); 16213#L88-2 assume !(0 != main_~p2~0#1); 16210#L92-1 assume !(0 != main_~p3~0#1); 16205#L96-1 assume !(0 != main_~p4~0#1); 16206#L100-1 assume !(0 != main_~p5~0#1); 16270#L104-1 assume !(0 != main_~p6~0#1); 16268#L108-1 assume !(0 != main_~p7~0#1); 16266#L112-1 assume !(0 != main_~p8~0#1); 16265#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 16264#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 16263#L124-1 assume !(0 != main_~p11~0#1); 16262#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 16261#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 16260#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 16258#L140-1 assume !(0 != main_~p1~0#1); 16256#L146-1 assume !(0 != main_~p2~0#1); 16255#L151-1 assume !(0 != main_~p3~0#1); 16126#L156-1 assume !(0 != main_~p4~0#1); 16127#L161-1 assume !(0 != main_~p5~0#1); 16120#L166-1 assume !(0 != main_~p6~0#1); 16121#L171-1 assume !(0 != main_~p7~0#1); 16248#L176-1 assume !(0 != main_~p8~0#1); 16245#L181-1 assume !(0 != main_~p9~0#1); 16240#L186-1 assume !(0 != main_~p10~0#1); 16237#L191-1 assume !(0 != main_~p11~0#1); 16233#L196-1 assume !(0 != main_~p12~0#1); 16229#L201-1 assume !(0 != main_~p13~0#1); 16225#L206-1 assume !(0 != main_~p14~0#1); 15778#L211-1 [2023-11-06 23:06:38,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2023-11-06 23:06:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:38,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116570544] [2023-11-06 23:06:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:38,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:38,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:38,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:38,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1477839163, now seen corresponding path program 1 times [2023-11-06 23:06:38,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:38,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852811146] [2023-11-06 23:06:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:38,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:38,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:38,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852811146] [2023-11-06 23:06:38,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852811146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:38,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:38,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684127325] [2023-11-06 23:06:38,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:38,292 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:38,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:38,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:38,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:38,293 INFO L87 Difference]: Start difference. First operand 5186 states and 7874 transitions. cyclomatic complexity: 2816 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:38,368 INFO L93 Difference]: Finished difference Result 10242 states and 15362 transitions. [2023-11-06 23:06:38,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10242 states and 15362 transitions. [2023-11-06 23:06:38,449 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2023-11-06 23:06:38,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10242 states to 10242 states and 15362 transitions. [2023-11-06 23:06:38,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10242 [2023-11-06 23:06:38,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10242 [2023-11-06 23:06:38,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10242 states and 15362 transitions. [2023-11-06 23:06:38,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:38,646 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10242 states and 15362 transitions. [2023-11-06 23:06:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states and 15362 transitions. [2023-11-06 23:06:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10242. [2023-11-06 23:06:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10242 states, 10242 states have (on average 1.4999023628197619) internal successors, (15362), 10241 states have internal predecessors, (15362), 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) [2023-11-06 23:06:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 15362 transitions. [2023-11-06 23:06:38,966 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10242 states and 15362 transitions. [2023-11-06 23:06:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:38,970 INFO L428 stractBuchiCegarLoop]: Abstraction has 10242 states and 15362 transitions. [2023-11-06 23:06:38,971 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-06 23:06:38,971 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10242 states and 15362 transitions. [2023-11-06 23:06:39,026 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2023-11-06 23:06:39,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:39,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:39,027 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:39,027 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:39,028 INFO L748 eck$LassoCheckResult]: Stem: 31245#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 31211#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 31212#L211-1 [2023-11-06 23:06:39,029 INFO L750 eck$LassoCheckResult]: Loop: 31212#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 31551#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 31552#L88 assume !(0 != main_~p1~0#1); 31571#L88-2 assume !(0 != main_~p2~0#1); 31569#L92-1 assume !(0 != main_~p3~0#1); 31566#L96-1 assume !(0 != main_~p4~0#1); 31562#L100-1 assume !(0 != main_~p5~0#1); 31558#L104-1 assume !(0 != main_~p6~0#1); 31555#L108-1 assume !(0 != main_~p7~0#1); 31509#L112-1 assume !(0 != main_~p8~0#1); 31511#L116-1 assume !(0 != main_~p9~0#1); 31491#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 31492#L124-1 assume !(0 != main_~p11~0#1); 31475#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 31476#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 31459#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 31460#L140-1 assume !(0 != main_~p1~0#1); 31443#L146-1 assume !(0 != main_~p2~0#1); 31445#L151-1 assume !(0 != main_~p3~0#1); 31417#L156-1 assume !(0 != main_~p4~0#1); 31419#L161-1 assume !(0 != main_~p5~0#1); 31393#L166-1 assume !(0 != main_~p6~0#1); 31394#L171-1 assume !(0 != main_~p7~0#1); 31599#L176-1 assume !(0 != main_~p8~0#1); 31595#L181-1 assume !(0 != main_~p9~0#1); 31591#L186-1 assume !(0 != main_~p10~0#1); 31588#L191-1 assume !(0 != main_~p11~0#1); 31584#L196-1 assume !(0 != main_~p12~0#1); 31580#L201-1 assume !(0 != main_~p13~0#1); 31576#L206-1 assume !(0 != main_~p14~0#1); 31212#L211-1 [2023-11-06 23:06:39,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:39,034 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2023-11-06 23:06:39,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:39,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820363924] [2023-11-06 23:06:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:39,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:39,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:39,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:39,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:39,058 INFO L85 PathProgramCache]: Analyzing trace with hash 660190713, now seen corresponding path program 1 times [2023-11-06 23:06:39,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:39,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56734136] [2023-11-06 23:06:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:39,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:39,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:39,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56734136] [2023-11-06 23:06:39,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56734136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:39,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:39,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:39,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115603617] [2023-11-06 23:06:39,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:39,100 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:39,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:39,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:39,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:39,101 INFO L87 Difference]: Start difference. First operand 10242 states and 15362 transitions. cyclomatic complexity: 5376 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:39,215 INFO L93 Difference]: Finished difference Result 20226 states and 29954 transitions. [2023-11-06 23:06:39,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20226 states and 29954 transitions. [2023-11-06 23:06:39,433 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2023-11-06 23:06:39,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20226 states to 20226 states and 29954 transitions. [2023-11-06 23:06:39,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20226 [2023-11-06 23:06:39,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20226 [2023-11-06 23:06:39,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20226 states and 29954 transitions. [2023-11-06 23:06:39,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:39,650 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20226 states and 29954 transitions. [2023-11-06 23:06:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20226 states and 29954 transitions. [2023-11-06 23:06:39,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20226 to 20226. [2023-11-06 23:06:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20226 states, 20226 states have (on average 1.4809650944329082) internal successors, (29954), 20225 states have internal predecessors, (29954), 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) [2023-11-06 23:06:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20226 states to 20226 states and 29954 transitions. [2023-11-06 23:06:40,093 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20226 states and 29954 transitions. [2023-11-06 23:06:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:40,094 INFO L428 stractBuchiCegarLoop]: Abstraction has 20226 states and 29954 transitions. [2023-11-06 23:06:40,094 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-06 23:06:40,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20226 states and 29954 transitions. [2023-11-06 23:06:40,230 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2023-11-06 23:06:40,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:40,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:40,231 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:40,231 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:40,232 INFO L748 eck$LassoCheckResult]: Stem: 61721#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 61684#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 61685#L211-1 [2023-11-06 23:06:40,232 INFO L750 eck$LassoCheckResult]: Loop: 61685#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 62230#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 62226#L88 assume !(0 != main_~p1~0#1); 62218#L88-2 assume !(0 != main_~p2~0#1); 62220#L92-1 assume !(0 != main_~p3~0#1); 62209#L96-1 assume !(0 != main_~p4~0#1); 62210#L100-1 assume !(0 != main_~p5~0#1); 62371#L104-1 assume !(0 != main_~p6~0#1); 62365#L108-1 assume !(0 != main_~p7~0#1); 62359#L112-1 assume !(0 != main_~p8~0#1); 62354#L116-1 assume !(0 != main_~p9~0#1); 62348#L120-1 assume !(0 != main_~p10~0#1); 62343#L124-1 assume !(0 != main_~p11~0#1); 62340#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 62338#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 62334#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 62329#L140-1 assume !(0 != main_~p1~0#1); 62324#L146-1 assume !(0 != main_~p2~0#1); 62319#L151-1 assume !(0 != main_~p3~0#1); 62312#L156-1 assume !(0 != main_~p4~0#1); 62307#L161-1 assume !(0 != main_~p5~0#1); 62302#L166-1 assume !(0 != main_~p6~0#1); 62298#L171-1 assume !(0 != main_~p7~0#1); 62292#L176-1 assume !(0 != main_~p8~0#1); 62286#L181-1 assume !(0 != main_~p9~0#1); 62280#L186-1 assume !(0 != main_~p10~0#1); 62275#L191-1 assume !(0 != main_~p11~0#1); 62269#L196-1 assume !(0 != main_~p12~0#1); 62265#L201-1 assume !(0 != main_~p13~0#1); 62241#L206-1 assume !(0 != main_~p14~0#1); 61685#L211-1 [2023-11-06 23:06:40,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2023-11-06 23:06:40,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:40,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741713963] [2023-11-06 23:06:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:40,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:40,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:40,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:40,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1028753029, now seen corresponding path program 1 times [2023-11-06 23:06:40,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:40,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184685191] [2023-11-06 23:06:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:40,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184685191] [2023-11-06 23:06:40,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184685191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:40,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:40,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:40,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862326913] [2023-11-06 23:06:40,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:40,269 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:40,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:40,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:40,277 INFO L87 Difference]: Start difference. First operand 20226 states and 29954 transitions. cyclomatic complexity: 10240 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:40,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:40,467 INFO L93 Difference]: Finished difference Result 39938 states and 58370 transitions. [2023-11-06 23:06:40,467 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39938 states and 58370 transitions. [2023-11-06 23:06:40,845 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2023-11-06 23:06:41,131 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39938 states to 39938 states and 58370 transitions. [2023-11-06 23:06:41,132 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39938 [2023-11-06 23:06:41,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39938 [2023-11-06 23:06:41,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39938 states and 58370 transitions. [2023-11-06 23:06:41,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:41,200 INFO L218 hiAutomatonCegarLoop]: Abstraction has 39938 states and 58370 transitions. [2023-11-06 23:06:41,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39938 states and 58370 transitions. [2023-11-06 23:06:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39938 to 39938. [2023-11-06 23:06:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39938 states, 39938 states have (on average 1.4615153487906254) internal successors, (58370), 39937 states have internal predecessors, (58370), 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) [2023-11-06 23:06:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39938 states to 39938 states and 58370 transitions. [2023-11-06 23:06:42,050 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39938 states and 58370 transitions. [2023-11-06 23:06:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:42,052 INFO L428 stractBuchiCegarLoop]: Abstraction has 39938 states and 58370 transitions. [2023-11-06 23:06:42,052 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-06 23:06:42,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39938 states and 58370 transitions. [2023-11-06 23:06:42,494 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2023-11-06 23:06:42,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:42,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:42,495 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:42,495 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:42,495 INFO L748 eck$LassoCheckResult]: Stem: 121887#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 121854#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 121855#L211-1 [2023-11-06 23:06:42,496 INFO L750 eck$LassoCheckResult]: Loop: 121855#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 122666#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 122661#L88 assume !(0 != main_~p1~0#1); 122654#L88-2 assume !(0 != main_~p2~0#1); 122649#L92-1 assume !(0 != main_~p3~0#1); 122642#L96-1 assume !(0 != main_~p4~0#1); 122634#L100-1 assume !(0 != main_~p5~0#1); 122626#L104-1 assume !(0 != main_~p6~0#1); 122620#L108-1 assume !(0 != main_~p7~0#1); 122612#L112-1 assume !(0 != main_~p8~0#1); 122614#L116-1 assume !(0 != main_~p9~0#1); 122603#L120-1 assume !(0 != main_~p10~0#1); 122604#L124-1 assume !(0 != main_~p11~0#1); 122586#L128-1 assume !(0 != main_~p12~0#1); 122588#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 122539#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 122540#L140-1 assume !(0 != main_~p1~0#1); 122727#L146-1 assume !(0 != main_~p2~0#1); 122724#L151-1 assume !(0 != main_~p3~0#1); 122720#L156-1 assume !(0 != main_~p4~0#1); 122719#L161-1 assume !(0 != main_~p5~0#1); 122709#L166-1 assume !(0 != main_~p6~0#1); 122705#L171-1 assume !(0 != main_~p7~0#1); 122701#L176-1 assume !(0 != main_~p8~0#1); 122697#L181-1 assume !(0 != main_~p9~0#1); 122694#L186-1 assume !(0 != main_~p10~0#1); 122691#L191-1 assume !(0 != main_~p11~0#1); 122684#L196-1 assume !(0 != main_~p12~0#1); 122679#L201-1 assume !(0 != main_~p13~0#1); 122673#L206-1 assume !(0 != main_~p14~0#1); 121855#L211-1 [2023-11-06 23:06:42,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2023-11-06 23:06:42,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:42,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448271269] [2023-11-06 23:06:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:42,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:42,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:42,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:42,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1677866365, now seen corresponding path program 1 times [2023-11-06 23:06:42,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:42,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517254529] [2023-11-06 23:06:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:42,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:42,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517254529] [2023-11-06 23:06:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517254529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:42,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:42,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:42,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792844036] [2023-11-06 23:06:42,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:42,529 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:42,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:42,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:42,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:42,530 INFO L87 Difference]: Start difference. First operand 39938 states and 58370 transitions. cyclomatic complexity: 19456 Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:42,880 INFO L93 Difference]: Finished difference Result 78850 states and 113666 transitions. [2023-11-06 23:06:42,880 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78850 states and 113666 transitions. [2023-11-06 23:06:43,387 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 78848 [2023-11-06 23:06:43,685 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78850 states to 78850 states and 113666 transitions. [2023-11-06 23:06:43,685 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78850 [2023-11-06 23:06:43,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78850 [2023-11-06 23:06:43,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78850 states and 113666 transitions. [2023-11-06 23:06:43,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:43,895 INFO L218 hiAutomatonCegarLoop]: Abstraction has 78850 states and 113666 transitions. [2023-11-06 23:06:43,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78850 states and 113666 transitions. [2023-11-06 23:06:45,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78850 to 78850. [2023-11-06 23:06:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78850 states, 78850 states have (on average 1.4415472415979709) internal successors, (113666), 78849 states have internal predecessors, (113666), 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) [2023-11-06 23:06:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78850 states to 78850 states and 113666 transitions. [2023-11-06 23:06:45,332 INFO L240 hiAutomatonCegarLoop]: Abstraction has 78850 states and 113666 transitions. [2023-11-06 23:06:45,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:45,333 INFO L428 stractBuchiCegarLoop]: Abstraction has 78850 states and 113666 transitions. [2023-11-06 23:06:45,333 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2023-11-06 23:06:45,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78850 states and 113666 transitions. [2023-11-06 23:06:45,892 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 78848 [2023-11-06 23:06:45,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:45,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:45,894 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:45,894 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:45,894 INFO L748 eck$LassoCheckResult]: Stem: 240689#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 240647#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 240648#L211-1 [2023-11-06 23:06:45,895 INFO L750 eck$LassoCheckResult]: Loop: 240648#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 240853#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 240849#L88 assume !(0 != main_~p1~0#1); 240842#L88-2 assume !(0 != main_~p2~0#1); 240837#L92-1 assume !(0 != main_~p3~0#1); 240830#L96-1 assume !(0 != main_~p4~0#1); 240822#L100-1 assume !(0 != main_~p5~0#1); 240814#L104-1 assume !(0 != main_~p6~0#1); 240806#L108-1 assume !(0 != main_~p7~0#1); 240798#L112-1 assume !(0 != main_~p8~0#1); 240790#L116-1 assume !(0 != main_~p9~0#1); 240782#L120-1 assume !(0 != main_~p10~0#1); 240777#L124-1 assume !(0 != main_~p11~0#1); 240770#L128-1 assume !(0 != main_~p12~0#1); 240764#L132-1 assume !(0 != main_~p13~0#1); 240758#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 240759#L140-1 assume !(0 != main_~p1~0#1); 240748#L146-1 assume !(0 != main_~p2~0#1); 240750#L151-1 assume !(0 != main_~p3~0#1); 240950#L156-1 assume !(0 != main_~p4~0#1); 240946#L161-1 assume !(0 != main_~p5~0#1); 240942#L166-1 assume !(0 != main_~p6~0#1); 240938#L171-1 assume !(0 != main_~p7~0#1); 240934#L176-1 assume !(0 != main_~p8~0#1); 240930#L181-1 assume !(0 != main_~p9~0#1); 240885#L186-1 assume !(0 != main_~p10~0#1); 240882#L191-1 assume !(0 != main_~p11~0#1); 240874#L196-1 assume !(0 != main_~p12~0#1); 240869#L201-1 assume !(0 != main_~p13~0#1); 240862#L206-1 assume !(0 != main_~p14~0#1); 240648#L211-1 [2023-11-06 23:06:45,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2023-11-06 23:06:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:45,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976459620] [2023-11-06 23:06:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:45,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:45,905 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:45,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:45,906 INFO L85 PathProgramCache]: Analyzing trace with hash 656798011, now seen corresponding path program 1 times [2023-11-06 23:06:45,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:45,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530541999] [2023-11-06 23:06:45,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:45,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:45,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:45,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530541999] [2023-11-06 23:06:45,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530541999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:45,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:45,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:06:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395164998] [2023-11-06 23:06:45,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:45,935 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:45,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:45,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:45,936 INFO L87 Difference]: Start difference. First operand 78850 states and 113666 transitions. cyclomatic complexity: 36864 Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:46,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:46,429 INFO L93 Difference]: Finished difference Result 155650 states and 221186 transitions. [2023-11-06 23:06:46,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155650 states and 221186 transitions. [2023-11-06 23:06:47,679 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 155648 [2023-11-06 23:06:48,140 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155650 states to 155650 states and 221186 transitions. [2023-11-06 23:06:48,141 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155650 [2023-11-06 23:06:48,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155650 [2023-11-06 23:06:48,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155650 states and 221186 transitions. [2023-11-06 23:06:48,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:48,415 INFO L218 hiAutomatonCegarLoop]: Abstraction has 155650 states and 221186 transitions. [2023-11-06 23:06:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155650 states and 221186 transitions. [2023-11-06 23:06:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155650 to 155650. [2023-11-06 23:06:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155650 states, 155650 states have (on average 1.4210472213299068) internal successors, (221186), 155649 states have internal predecessors, (221186), 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) [2023-11-06 23:06:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155650 states to 155650 states and 221186 transitions. [2023-11-06 23:06:51,427 INFO L240 hiAutomatonCegarLoop]: Abstraction has 155650 states and 221186 transitions. [2023-11-06 23:06:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:51,430 INFO L428 stractBuchiCegarLoop]: Abstraction has 155650 states and 221186 transitions. [2023-11-06 23:06:51,431 INFO L335 stractBuchiCegarLoop]: ======== Iteration 13 ============ [2023-11-06 23:06:51,431 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 155650 states and 221186 transitions. [2023-11-06 23:06:51,916 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 155648 [2023-11-06 23:06:51,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:51,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:51,919 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:51,919 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:51,920 INFO L748 eck$LassoCheckResult]: Stem: 475195#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 475155#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 475156#L211-1 [2023-11-06 23:06:51,920 INFO L750 eck$LassoCheckResult]: Loop: 475156#L211-1 assume !false;havoc main_#t~nondet18#1;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 475827#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 475790#L88 assume !(0 != main_~p1~0#1); 475783#L88-2 assume !(0 != main_~p2~0#1); 475777#L92-1 assume !(0 != main_~p3~0#1); 475772#L96-1 assume !(0 != main_~p4~0#1); 475765#L100-1 assume !(0 != main_~p5~0#1); 475758#L104-1 assume !(0 != main_~p6~0#1); 475751#L108-1 assume !(0 != main_~p7~0#1); 475743#L112-1 assume !(0 != main_~p8~0#1); 475745#L116-1 assume !(0 != main_~p9~0#1); 475914#L120-1 assume !(0 != main_~p10~0#1); 475911#L124-1 assume !(0 != main_~p11~0#1); 475908#L128-1 assume !(0 != main_~p12~0#1); 475904#L132-1 assume !(0 != main_~p13~0#1); 475895#L136-1 assume !(0 != main_~p14~0#1); 475896#L140-1 assume !(0 != main_~p1~0#1); 475952#L146-1 assume !(0 != main_~p2~0#1); 475973#L151-1 assume !(0 != main_~p3~0#1); 475970#L156-1 assume !(0 != main_~p4~0#1); 475968#L161-1 assume !(0 != main_~p5~0#1); 475966#L166-1 assume !(0 != main_~p6~0#1); 475964#L171-1 assume !(0 != main_~p7~0#1); 475962#L176-1 assume !(0 != main_~p8~0#1); 475960#L181-1 assume !(0 != main_~p9~0#1); 475958#L186-1 assume !(0 != main_~p10~0#1); 475957#L191-1 assume !(0 != main_~p11~0#1); 475954#L196-1 assume !(0 != main_~p12~0#1); 475634#L201-1 assume !(0 != main_~p13~0#1); 475635#L206-1 assume !(0 != main_~p14~0#1); 475156#L211-1 [2023-11-06 23:06:51,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:51,921 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 13 times [2023-11-06 23:06:51,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:51,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536705391] [2023-11-06 23:06:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:51,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:51,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:51,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:51,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:51,932 INFO L85 PathProgramCache]: Analyzing trace with hash -623065667, now seen corresponding path program 1 times [2023-11-06 23:06:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:51,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351423426] [2023-11-06 23:06:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:51,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:51,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:51,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:51,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1839024639, now seen corresponding path program 1 times [2023-11-06 23:06:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585980237] [2023-11-06 23:06:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:51,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:51,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:51,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:52,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:52,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 11:06:52 BoogieIcfgContainer [2023-11-06 23:06:52,762 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 23:06:52,763 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:06:52,763 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:06:52,764 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:06:52,764 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:36" (3/4) ... [2023-11-06 23:06:52,766 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 23:06:52,833 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:06:52,834 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:06:52,834 INFO L158 Benchmark]: Toolchain (without parser) took 17653.13ms. Allocated memory was 130.0MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 91.5MB in the beginning and 9.8GB in the end (delta: -9.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-11-06 23:06:52,835 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 100.7MB. Free memory was 52.9MB in the beginning and 52.8MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:06:52,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.63ms. Allocated memory is still 130.0MB. Free memory was 91.2MB in the beginning and 79.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:06:52,836 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.11ms. Allocated memory is still 130.0MB. Free memory was 79.6MB in the beginning and 77.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:06:52,836 INFO L158 Benchmark]: Boogie Preprocessor took 32.58ms. Allocated memory is still 130.0MB. Free memory was 77.9MB in the beginning and 76.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:06:52,836 INFO L158 Benchmark]: RCFGBuilder took 575.70ms. Allocated memory is still 130.0MB. Free memory was 76.1MB in the beginning and 62.2MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:06:52,837 INFO L158 Benchmark]: BuchiAutomizer took 16660.04ms. Allocated memory was 130.0MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 62.2MB in the beginning and 9.9GB in the end (delta: -9.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-11-06 23:06:52,837 INFO L158 Benchmark]: Witness Printer took 70.63ms. Allocated memory is still 11.4GB. Free memory was 9.9GB in the beginning and 9.8GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:06:52,840 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 100.7MB. Free memory was 52.9MB in the beginning and 52.8MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.63ms. Allocated memory is still 130.0MB. Free memory was 91.2MB in the beginning and 79.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.11ms. Allocated memory is still 130.0MB. Free memory was 79.6MB in the beginning and 77.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.58ms. Allocated memory is still 130.0MB. Free memory was 77.9MB in the beginning and 76.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 575.70ms. Allocated memory is still 130.0MB. Free memory was 76.1MB in the beginning and 62.2MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 16660.04ms. Allocated memory was 130.0MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 62.2MB in the beginning and 9.9GB in the end (delta: -9.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 70.63ms. Allocated memory is still 11.4GB. Free memory was 9.9GB in the beginning and 9.8GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 12 terminating modules (12 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.12 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 155650 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.5s and 13 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.1s. Büchi inclusion checks took 12.6s. Highest rank in rank-based complementation 0. Minimization of det autom 12. Minimization of nondet autom 0. Automata minimization 6.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 4.0s Buchi closure took 0.3s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 688 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 688 mSDsluCounter, 2155 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 832 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 1323 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI12 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 53]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; Loop: [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND FALSE !(p8 != 0) [L120] COND FALSE !(p9 != 0) [L124] COND FALSE !(p10 != 0) [L128] COND FALSE !(p11 != 0) [L132] COND FALSE !(p12 != 0) [L136] COND FALSE !(p13 != 0) [L140] COND FALSE !(p14 != 0) [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L156] COND FALSE !(p3 != 0) [L161] COND FALSE !(p4 != 0) [L166] COND FALSE !(p5 != 0) [L171] COND FALSE !(p6 != 0) [L176] COND FALSE !(p7 != 0) [L181] COND FALSE !(p8 != 0) [L186] COND FALSE !(p9 != 0) [L191] COND FALSE !(p10 != 0) [L196] COND FALSE !(p11 != 0) [L201] COND FALSE !(p12 != 0) [L206] COND FALSE !(p13 != 0) [L211] COND FALSE !(p14 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 53]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; Loop: [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND FALSE !(p8 != 0) [L120] COND FALSE !(p9 != 0) [L124] COND FALSE !(p10 != 0) [L128] COND FALSE !(p11 != 0) [L132] COND FALSE !(p12 != 0) [L136] COND FALSE !(p13 != 0) [L140] COND FALSE !(p14 != 0) [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L156] COND FALSE !(p3 != 0) [L161] COND FALSE !(p4 != 0) [L166] COND FALSE !(p5 != 0) [L171] COND FALSE !(p6 != 0) [L176] COND FALSE !(p7 != 0) [L181] COND FALSE !(p8 != 0) [L186] COND FALSE !(p9 != 0) [L191] COND FALSE !(p10 != 0) [L196] COND FALSE !(p11 != 0) [L201] COND FALSE !(p12 != 0) [L206] COND FALSE !(p13 != 0) [L211] COND FALSE !(p14 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 23:06:52,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1bf5b8-d11c-4bc9-ba53-257acc1b2ad9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, 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)