./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_10.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_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/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_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/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_3123284f-bdd2-496c-8505-46d9e6302570/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 c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:06:26,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:06:26,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 23:06:26,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:06:26,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:06:27,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:06:27,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:06:27,011 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:06:27,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:06:27,013 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:06:27,014 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:06:27,014 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 23:06:27,015 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 23:06:27,015 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 23:06:27,016 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 23:06:27,016 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 23:06:27,017 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 23:06:27,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:06:27,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 23:06:27,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:06:27,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:06:27,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:06:27,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:06:27,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 23:06:27,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 23:06:27,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 23:06:27,037 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:06:27,037 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:06:27,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:06:27,038 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 23:06:27,038 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:06:27,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:06:27,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:06:27,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:06:27,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:06:27,040 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 23:06:27,040 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_3123284f-bdd2-496c-8505-46d9e6302570/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b [2023-11-06 23:06:27,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:06:27,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:06:27,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:06:27,332 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:06:27,333 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:06:27,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/locks/test_locks_10.c [2023-11-06 23:06:30,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:06:30,720 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:06:30,720 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/sv-benchmarks/c/locks/test_locks_10.c [2023-11-06 23:06:30,730 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/data/fd0fee3f3/0dad05407c844530ae1201b40184b0c0/FLAG9d6e19089 [2023-11-06 23:06:30,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/data/fd0fee3f3/0dad05407c844530ae1201b40184b0c0 [2023-11-06 23:06:30,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:06:30,761 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:06:30,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:30,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:06:30,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:06:30,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:30" (1/1) ... [2023-11-06 23:06:30,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12702c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:30, skipping insertion in model container [2023-11-06 23:06:30,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:30" (1/1) ... [2023-11-06 23:06:30,812 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:30,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:30,994 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:06:31,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:31,044 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:06:31,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31 WrapperNode [2023-11-06 23:06:31,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:31,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:31,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:06:31,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:06:31,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,086 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 138 [2023-11-06 23:06:31,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:31,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:06:31,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:06:31,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:06:31,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,096 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:06:31,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:06:31,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:06:31,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:06:31,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (1/1) ... [2023-11-06 23:06:31,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:06:31,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:31,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:06:31,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 23:06:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:06:31,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:06:31,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:06:31,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:06:31,281 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:06:31,283 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:06:31,481 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:06:31,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:06:31,489 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:06:31,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:31 BoogieIcfgContainer [2023-11-06 23:06:31,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:06:31,492 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 23:06:31,493 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 23:06:31,496 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 23:06:31,496 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:06:31,496 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 11:06:30" (1/3) ... [2023-11-06 23:06:31,497 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47da2319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:06:31, skipping insertion in model container [2023-11-06 23:06:31,497 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:06:31,498 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:31" (2/3) ... [2023-11-06 23:06:31,498 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47da2319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:06:31, skipping insertion in model container [2023-11-06 23:06:31,498 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:06:31,498 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:31" (3/3) ... [2023-11-06 23:06:31,500 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_10.c [2023-11-06 23:06:31,552 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 23:06:31,552 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 23:06:31,552 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 23:06:31,552 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 23:06:31,553 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 23:06:31,553 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 23:06:31,553 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 23:06:31,553 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 23:06:31,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 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 23:06:31,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2023-11-06 23:06:31,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:31,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:31,580 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:31,581 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] [2023-11-06 23:06:31,581 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 23:06:31,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 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 23:06:31,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2023-11-06 23:06:31,585 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:31,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:31,586 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:31,586 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] [2023-11-06 23:06:31,594 INFO L748 eck$LassoCheckResult]: Stem: 38#$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(16, 2);call #Ultimate.allocInit(12, 3); 8#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_~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_~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_~cond~0#1; 28#L155-1true [2023-11-06 23:06:31,594 INFO L750 eck$LassoCheckResult]: Loop: 28#L155-1true assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 25#L43true 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; 29#L68true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 9#L68-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 3#L72-1true assume !(0 != main_~p3~0#1); 19#L76-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 18#L80-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 30#L84-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 20#L88-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 6#L92-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4#L96-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 7#L100-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 39#L104-1true assume !(0 != main_~p1~0#1); 23#L110-1true assume !(0 != main_~p2~0#1); 33#L115-1true assume !(0 != main_~p3~0#1); 17#L120-1true assume !(0 != main_~p4~0#1); 27#L125-1true assume !(0 != main_~p5~0#1); 36#L130-1true assume !(0 != main_~p6~0#1); 15#L135-1true assume !(0 != main_~p7~0#1); 13#L140-1true assume !(0 != main_~p8~0#1); 40#L145-1true assume !(0 != main_~p9~0#1); 10#L150-1true assume !(0 != main_~p10~0#1); 28#L155-1true [2023-11-06 23:06:31,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 23:06:31,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:31,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681947143] [2023-11-06 23:06:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:31,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:31,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:31,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1693159719, now seen corresponding path program 1 times [2023-11-06 23:06:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:31,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599241971] [2023-11-06 23:06:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:31,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:31,863 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 23:06:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:31,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599241971] [2023-11-06 23:06:31,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599241971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:31,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:31,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539589468] [2023-11-06 23:06:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:31,871 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:31,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:31,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:31,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:31,935 INFO L87 Difference]: Start difference. First operand has 40 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 39 states have internal predecessors, (72), 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 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:31,994 INFO L93 Difference]: Finished difference Result 73 states and 129 transitions. [2023-11-06 23:06:31,995 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 129 transitions. [2023-11-06 23:06:32,000 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 63 [2023-11-06 23:06:32,005 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 65 states and 103 transitions. [2023-11-06 23:06:32,007 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2023-11-06 23:06:32,007 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2023-11-06 23:06:32,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 103 transitions. [2023-11-06 23:06:32,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:32,009 INFO L218 hiAutomatonCegarLoop]: Abstraction has 65 states and 103 transitions. [2023-11-06 23:06:32,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 103 transitions. [2023-11-06 23:06:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-06 23:06:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.5846153846153845) internal successors, (103), 64 states have internal predecessors, (103), 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 23:06:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 103 transitions. [2023-11-06 23:06:32,041 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 103 transitions. [2023-11-06 23:06:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:32,047 INFO L428 stractBuchiCegarLoop]: Abstraction has 65 states and 103 transitions. [2023-11-06 23:06:32,047 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 23:06:32,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 103 transitions. [2023-11-06 23:06:32,050 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 63 [2023-11-06 23:06:32,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:32,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:32,051 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:32,051 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] [2023-11-06 23:06:32,052 INFO L748 eck$LassoCheckResult]: Stem: 159#$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(16, 2);call #Ultimate.allocInit(12, 3); 130#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_~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_~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_~cond~0#1; 131#L155-1 [2023-11-06 23:06:32,052 INFO L750 eck$LassoCheckResult]: Loop: 131#L155-1 assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 170#L43 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; 169#L68 assume !(0 != main_~p1~0#1); 168#L68-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 167#L72-1 assume !(0 != main_~p3~0#1); 166#L76-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 165#L80-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 164#L84-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 147#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 128#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 124#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 125#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 129#L104-1 assume !(0 != main_~p1~0#1); 150#L110-1 assume !(0 != main_~p2~0#1); 151#L115-1 assume !(0 != main_~p3~0#1); 144#L120-1 assume !(0 != main_~p4~0#1); 127#L125-1 assume !(0 != main_~p5~0#1); 137#L130-1 assume !(0 != main_~p6~0#1); 143#L135-1 assume !(0 != main_~p7~0#1); 142#L140-1 assume !(0 != main_~p8~0#1); 174#L145-1 assume !(0 != main_~p9~0#1); 172#L150-1 assume !(0 != main_~p10~0#1); 131#L155-1 [2023-11-06 23:06:32,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,053 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-06 23:06:32,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209799770] [2023-11-06 23:06:32,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,063 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:32,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1784159127, now seen corresponding path program 1 times [2023-11-06 23:06:32,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687397557] [2023-11-06 23:06:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:32,157 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 23:06:32,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687397557] [2023-11-06 23:06:32,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687397557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:32,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:32,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:32,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643980064] [2023-11-06 23:06:32,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:32,159 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:32,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:32,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:32,161 INFO L87 Difference]: Start difference. First operand 65 states and 103 transitions. cyclomatic complexity: 40 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:32,182 INFO L93 Difference]: Finished difference Result 126 states and 198 transitions. [2023-11-06 23:06:32,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 198 transitions. [2023-11-06 23:06:32,187 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 124 [2023-11-06 23:06:32,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 198 transitions. [2023-11-06 23:06:32,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2023-11-06 23:06:32,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2023-11-06 23:06:32,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 198 transitions. [2023-11-06 23:06:32,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:32,192 INFO L218 hiAutomatonCegarLoop]: Abstraction has 126 states and 198 transitions. [2023-11-06 23:06:32,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 198 transitions. [2023-11-06 23:06:32,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-11-06 23:06:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.5714285714285714) internal successors, (198), 125 states have internal predecessors, (198), 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 23:06:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 198 transitions. [2023-11-06 23:06:32,213 INFO L240 hiAutomatonCegarLoop]: Abstraction has 126 states and 198 transitions. [2023-11-06 23:06:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:32,215 INFO L428 stractBuchiCegarLoop]: Abstraction has 126 states and 198 transitions. [2023-11-06 23:06:32,215 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 23:06:32,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 198 transitions. [2023-11-06 23:06:32,218 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 124 [2023-11-06 23:06:32,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:32,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:32,219 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:32,220 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] [2023-11-06 23:06:32,220 INFO L748 eck$LassoCheckResult]: Stem: 359#$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(16, 2);call #Ultimate.allocInit(12, 3); 327#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_~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_~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_~cond~0#1; 328#L155-1 [2023-11-06 23:06:32,220 INFO L750 eck$LassoCheckResult]: Loop: 328#L155-1 assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 388#L43 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; 386#L68 assume !(0 != main_~p1~0#1); 384#L68-2 assume !(0 != main_~p2~0#1); 382#L72-1 assume !(0 != main_~p3~0#1); 380#L76-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 378#L80-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 376#L84-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 374#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 372#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 370#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 368#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 366#L104-1 assume !(0 != main_~p1~0#1); 362#L110-1 assume !(0 != main_~p2~0#1); 363#L115-1 assume !(0 != main_~p3~0#1); 419#L120-1 assume !(0 != main_~p4~0#1); 415#L125-1 assume !(0 != main_~p5~0#1); 411#L130-1 assume !(0 != main_~p6~0#1); 405#L135-1 assume !(0 != main_~p7~0#1); 401#L140-1 assume !(0 != main_~p8~0#1); 397#L145-1 assume !(0 != main_~p9~0#1); 393#L150-1 assume !(0 != main_~p10~0#1); 328#L155-1 [2023-11-06 23:06:32,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,221 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-06 23:06:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647895567] [2023-11-06 23:06:32,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,241 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:32,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash 95215385, now seen corresponding path program 1 times [2023-11-06 23:06:32,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368714871] [2023-11-06 23:06:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:32,358 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 23:06:32,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:32,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368714871] [2023-11-06 23:06:32,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368714871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:32,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:32,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:32,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833548501] [2023-11-06 23:06:32,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:32,364 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:32,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:32,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:32,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:32,368 INFO L87 Difference]: Start difference. First operand 126 states and 198 transitions. cyclomatic complexity: 76 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:32,403 INFO L93 Difference]: Finished difference Result 246 states and 382 transitions. [2023-11-06 23:06:32,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 382 transitions. [2023-11-06 23:06:32,411 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 244 [2023-11-06 23:06:32,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 246 states and 382 transitions. [2023-11-06 23:06:32,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 246 [2023-11-06 23:06:32,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2023-11-06 23:06:32,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 246 states and 382 transitions. [2023-11-06 23:06:32,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:32,424 INFO L218 hiAutomatonCegarLoop]: Abstraction has 246 states and 382 transitions. [2023-11-06 23:06:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states and 382 transitions. [2023-11-06 23:06:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2023-11-06 23:06:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 246 states have (on average 1.5528455284552845) internal successors, (382), 245 states have internal predecessors, (382), 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 23:06:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 382 transitions. [2023-11-06 23:06:32,456 INFO L240 hiAutomatonCegarLoop]: Abstraction has 246 states and 382 transitions. [2023-11-06 23:06:32,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:32,462 INFO L428 stractBuchiCegarLoop]: Abstraction has 246 states and 382 transitions. [2023-11-06 23:06:32,462 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 23:06:32,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 246 states and 382 transitions. [2023-11-06 23:06:32,465 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 244 [2023-11-06 23:06:32,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:32,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:32,466 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:32,466 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] [2023-11-06 23:06:32,466 INFO L748 eck$LassoCheckResult]: Stem: 739#$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(16, 2);call #Ultimate.allocInit(12, 3); 706#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_~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_~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_~cond~0#1; 707#L155-1 [2023-11-06 23:06:32,466 INFO L750 eck$LassoCheckResult]: Loop: 707#L155-1 assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 794#L43 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; 790#L68 assume !(0 != main_~p1~0#1); 785#L68-2 assume !(0 != main_~p2~0#1); 779#L72-1 assume !(0 != main_~p3~0#1); 775#L76-1 assume !(0 != main_~p4~0#1); 768#L80-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 769#L84-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 761#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 762#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 754#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 751#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 747#L104-1 assume !(0 != main_~p1~0#1); 748#L110-1 assume !(0 != main_~p2~0#1); 853#L115-1 assume !(0 != main_~p3~0#1); 851#L120-1 assume !(0 != main_~p4~0#1); 849#L125-1 assume !(0 != main_~p5~0#1); 845#L130-1 assume !(0 != main_~p6~0#1); 841#L135-1 assume !(0 != main_~p7~0#1); 837#L140-1 assume !(0 != main_~p8~0#1); 833#L145-1 assume !(0 != main_~p9~0#1); 829#L150-1 assume !(0 != main_~p10~0#1); 707#L155-1 [2023-11-06 23:06:32,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,471 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-06 23:06:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121422425] [2023-11-06 23:06:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:32,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1493132517, now seen corresponding path program 1 times [2023-11-06 23:06:32,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439534281] [2023-11-06 23:06:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:32,570 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 23:06:32,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439534281] [2023-11-06 23:06:32,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439534281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:32,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:32,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:32,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319526916] [2023-11-06 23:06:32,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:32,572 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:32,573 INFO L87 Difference]: Start difference. First operand 246 states and 382 transitions. cyclomatic complexity: 144 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:32,598 INFO L93 Difference]: Finished difference Result 482 states and 738 transitions. [2023-11-06 23:06:32,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 482 states and 738 transitions. [2023-11-06 23:06:32,605 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 480 [2023-11-06 23:06:32,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 482 states to 482 states and 738 transitions. [2023-11-06 23:06:32,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 482 [2023-11-06 23:06:32,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 482 [2023-11-06 23:06:32,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 482 states and 738 transitions. [2023-11-06 23:06:32,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:32,620 INFO L218 hiAutomatonCegarLoop]: Abstraction has 482 states and 738 transitions. [2023-11-06 23:06:32,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states and 738 transitions. [2023-11-06 23:06:32,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2023-11-06 23:06:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 482 states have (on average 1.5311203319502074) internal successors, (738), 481 states have internal predecessors, (738), 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 23:06:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 738 transitions. [2023-11-06 23:06:32,662 INFO L240 hiAutomatonCegarLoop]: Abstraction has 482 states and 738 transitions. [2023-11-06 23:06:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:32,668 INFO L428 stractBuchiCegarLoop]: Abstraction has 482 states and 738 transitions. [2023-11-06 23:06:32,668 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 23:06:32,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 482 states and 738 transitions. [2023-11-06 23:06:32,672 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 480 [2023-11-06 23:06:32,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:32,673 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:32,673 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:32,673 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] [2023-11-06 23:06:32,674 INFO L748 eck$LassoCheckResult]: Stem: 1472#$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(16, 2);call #Ultimate.allocInit(12, 3); 1440#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_~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_~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_~cond~0#1; 1441#L155-1 [2023-11-06 23:06:32,674 INFO L750 eck$LassoCheckResult]: Loop: 1441#L155-1 assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 1524#L43 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; 1519#L68 assume !(0 != main_~p1~0#1); 1511#L68-2 assume !(0 != main_~p2~0#1); 1504#L72-1 assume !(0 != main_~p3~0#1); 1500#L76-1 assume !(0 != main_~p4~0#1); 1493#L80-1 assume !(0 != main_~p5~0#1); 1494#L84-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1606#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1604#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1602#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1600#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1596#L104-1 assume !(0 != main_~p1~0#1); 1584#L110-1 assume !(0 != main_~p2~0#1); 1583#L115-1 assume !(0 != main_~p3~0#1); 1577#L120-1 assume !(0 != main_~p4~0#1); 1573#L125-1 assume !(0 != main_~p5~0#1); 1571#L130-1 assume !(0 != main_~p6~0#1); 1567#L135-1 assume !(0 != main_~p7~0#1); 1563#L140-1 assume !(0 != main_~p8~0#1); 1559#L145-1 assume !(0 != main_~p9~0#1); 1555#L150-1 assume !(0 != main_~p10~0#1); 1441#L155-1 [2023-11-06 23:06:32,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,674 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2023-11-06 23:06:32,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014952280] [2023-11-06 23:06:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:32,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1780766425, now seen corresponding path program 1 times [2023-11-06 23:06:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695867054] [2023-11-06 23:06:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:32,781 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 23:06:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695867054] [2023-11-06 23:06:32,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695867054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:32,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:32,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:32,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646743741] [2023-11-06 23:06:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:32,783 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:32,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:32,784 INFO L87 Difference]: Start difference. First operand 482 states and 738 transitions. cyclomatic complexity: 272 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:32,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:32,810 INFO L93 Difference]: Finished difference Result 946 states and 1426 transitions. [2023-11-06 23:06:32,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 946 states and 1426 transitions. [2023-11-06 23:06:32,821 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 944 [2023-11-06 23:06:32,830 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 946 states to 946 states and 1426 transitions. [2023-11-06 23:06:32,831 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 946 [2023-11-06 23:06:32,832 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 946 [2023-11-06 23:06:32,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 946 states and 1426 transitions. [2023-11-06 23:06:32,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:32,834 INFO L218 hiAutomatonCegarLoop]: Abstraction has 946 states and 1426 transitions. [2023-11-06 23:06:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states and 1426 transitions. [2023-11-06 23:06:32,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2023-11-06 23:06:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 946 states have (on average 1.507399577167019) internal successors, (1426), 945 states have internal predecessors, (1426), 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 23:06:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1426 transitions. [2023-11-06 23:06:32,865 INFO L240 hiAutomatonCegarLoop]: Abstraction has 946 states and 1426 transitions. [2023-11-06 23:06:32,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:32,866 INFO L428 stractBuchiCegarLoop]: Abstraction has 946 states and 1426 transitions. [2023-11-06 23:06:32,867 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 23:06:32,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 946 states and 1426 transitions. [2023-11-06 23:06:32,874 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 944 [2023-11-06 23:06:32,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:32,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:32,875 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:32,875 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] [2023-11-06 23:06:32,875 INFO L748 eck$LassoCheckResult]: Stem: 2910#$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(16, 2);call #Ultimate.allocInit(12, 3); 2873#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_~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_~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_~cond~0#1; 2874#L155-1 [2023-11-06 23:06:32,876 INFO L750 eck$LassoCheckResult]: Loop: 2874#L155-1 assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 3066#L43 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; 3064#L68 assume !(0 != main_~p1~0#1); 3062#L68-2 assume !(0 != main_~p2~0#1); 3061#L72-1 assume !(0 != main_~p3~0#1); 3060#L76-1 assume !(0 != main_~p4~0#1); 3058#L80-1 assume !(0 != main_~p5~0#1); 3056#L84-1 assume !(0 != main_~p6~0#1); 3050#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 3051#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 3043#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 3044#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 3030#L104-1 assume !(0 != main_~p1~0#1); 3031#L110-1 assume !(0 != main_~p2~0#1); 3018#L115-1 assume !(0 != main_~p3~0#1); 3017#L120-1 assume !(0 != main_~p4~0#1); 3002#L125-1 assume !(0 != main_~p5~0#1); 3003#L130-1 assume !(0 != main_~p6~0#1); 3074#L135-1 assume !(0 != main_~p7~0#1); 3072#L140-1 assume !(0 != main_~p8~0#1); 3070#L145-1 assume !(0 != main_~p9~0#1); 3068#L150-1 assume !(0 != main_~p10~0#1); 2874#L155-1 [2023-11-06 23:06:32,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,876 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2023-11-06 23:06:32,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078667926] [2023-11-06 23:06:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:32,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:32,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:32,904 INFO L85 PathProgramCache]: Analyzing trace with hash 500902747, now seen corresponding path program 1 times [2023-11-06 23:06:32,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:32,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298257733] [2023-11-06 23:06:32,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:32,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:32,960 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 23:06:32,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:32,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298257733] [2023-11-06 23:06:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298257733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:32,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:32,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129914046] [2023-11-06 23:06:32,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:32,962 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:32,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:32,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:32,963 INFO L87 Difference]: Start difference. First operand 946 states and 1426 transitions. cyclomatic complexity: 512 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:33,005 INFO L93 Difference]: Finished difference Result 1858 states and 2754 transitions. [2023-11-06 23:06:33,005 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1858 states and 2754 transitions. [2023-11-06 23:06:33,031 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1856 [2023-11-06 23:06:33,048 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1858 states to 1858 states and 2754 transitions. [2023-11-06 23:06:33,048 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1858 [2023-11-06 23:06:33,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1858 [2023-11-06 23:06:33,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1858 states and 2754 transitions. [2023-11-06 23:06:33,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:33,055 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1858 states and 2754 transitions. [2023-11-06 23:06:33,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states and 2754 transitions. [2023-11-06 23:06:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1858. [2023-11-06 23:06:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1858 states have (on average 1.4822389666307858) internal successors, (2754), 1857 states have internal predecessors, (2754), 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 23:06:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2754 transitions. [2023-11-06 23:06:33,129 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1858 states and 2754 transitions. [2023-11-06 23:06:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:33,132 INFO L428 stractBuchiCegarLoop]: Abstraction has 1858 states and 2754 transitions. [2023-11-06 23:06:33,132 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-06 23:06:33,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1858 states and 2754 transitions. [2023-11-06 23:06:33,147 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1856 [2023-11-06 23:06:33,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:33,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:33,149 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:33,149 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] [2023-11-06 23:06:33,149 INFO L748 eck$LassoCheckResult]: Stem: 5722#$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(16, 2);call #Ultimate.allocInit(12, 3); 5683#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_~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_~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_~cond~0#1; 5684#L155-1 [2023-11-06 23:06:33,150 INFO L750 eck$LassoCheckResult]: Loop: 5684#L155-1 assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 5881#L43 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; 5878#L68 assume !(0 != main_~p1~0#1); 5874#L68-2 assume !(0 != main_~p2~0#1); 5871#L72-1 assume !(0 != main_~p3~0#1); 5869#L76-1 assume !(0 != main_~p4~0#1); 5861#L80-1 assume !(0 != main_~p5~0#1); 5863#L84-1 assume !(0 != main_~p6~0#1); 5850#L88-1 assume !(0 != main_~p7~0#1); 5852#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 5840#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 5841#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 5827#L104-1 assume !(0 != main_~p1~0#1); 5828#L110-1 assume !(0 != main_~p2~0#1); 5804#L115-1 assume !(0 != main_~p3~0#1); 5803#L120-1 assume !(0 != main_~p4~0#1); 5899#L125-1 assume !(0 != main_~p5~0#1); 5897#L130-1 assume !(0 != main_~p6~0#1); 5895#L135-1 assume !(0 != main_~p7~0#1); 5894#L140-1 assume !(0 != main_~p8~0#1); 5890#L145-1 assume !(0 != main_~p9~0#1); 5886#L150-1 assume !(0 != main_~p10~0#1); 5684#L155-1 [2023-11-06 23:06:33,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2023-11-06 23:06:33,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:33,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262672328] [2023-11-06 23:06:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:33,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:33,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:33,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:33,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:33,176 INFO L85 PathProgramCache]: Analyzing trace with hash -510214503, now seen corresponding path program 1 times [2023-11-06 23:06:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:33,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706535668] [2023-11-06 23:06:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:33,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:33,225 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 23:06:33,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:33,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706535668] [2023-11-06 23:06:33,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706535668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:33,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:33,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:33,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666576813] [2023-11-06 23:06:33,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:33,228 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:33,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:33,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:33,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:33,230 INFO L87 Difference]: Start difference. First operand 1858 states and 2754 transitions. cyclomatic complexity: 960 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:33,264 INFO L93 Difference]: Finished difference Result 3650 states and 5314 transitions. [2023-11-06 23:06:33,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3650 states and 5314 transitions. [2023-11-06 23:06:33,306 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 3648 [2023-11-06 23:06:33,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3650 states to 3650 states and 5314 transitions. [2023-11-06 23:06:33,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3650 [2023-11-06 23:06:33,341 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3650 [2023-11-06 23:06:33,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3650 states and 5314 transitions. [2023-11-06 23:06:33,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:33,347 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3650 states and 5314 transitions. [2023-11-06 23:06:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states and 5314 transitions. [2023-11-06 23:06:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3650. [2023-11-06 23:06:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3650 states have (on average 1.4558904109589041) internal successors, (5314), 3649 states have internal predecessors, (5314), 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 23:06:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5314 transitions. [2023-11-06 23:06:33,444 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3650 states and 5314 transitions. [2023-11-06 23:06:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:33,446 INFO L428 stractBuchiCegarLoop]: Abstraction has 3650 states and 5314 transitions. [2023-11-06 23:06:33,446 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-06 23:06:33,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3650 states and 5314 transitions. [2023-11-06 23:06:33,468 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 3648 [2023-11-06 23:06:33,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:33,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:33,471 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:33,472 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] [2023-11-06 23:06:33,472 INFO L748 eck$LassoCheckResult]: Stem: 11234#$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(16, 2);call #Ultimate.allocInit(12, 3); 11198#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_~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_~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_~cond~0#1; 11199#L155-1 [2023-11-06 23:06:33,472 INFO L750 eck$LassoCheckResult]: Loop: 11199#L155-1 assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 11423#L43 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; 11420#L68 assume !(0 != main_~p1~0#1); 11416#L68-2 assume !(0 != main_~p2~0#1); 11413#L72-1 assume !(0 != main_~p3~0#1); 11411#L76-1 assume !(0 != main_~p4~0#1); 11401#L80-1 assume !(0 != main_~p5~0#1); 11403#L84-1 assume !(0 != main_~p6~0#1); 11386#L88-1 assume !(0 != main_~p7~0#1); 11388#L92-1 assume !(0 != main_~p8~0#1); 11370#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 11371#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 11349#L104-1 assume !(0 != main_~p1~0#1); 11350#L110-1 assume !(0 != main_~p2~0#1); 11325#L115-1 assume !(0 != main_~p3~0#1); 11324#L120-1 assume !(0 != main_~p4~0#1); 11441#L125-1 assume !(0 != main_~p5~0#1); 11439#L130-1 assume !(0 != main_~p6~0#1); 11437#L135-1 assume !(0 != main_~p7~0#1); 11435#L140-1 assume !(0 != main_~p8~0#1); 11432#L145-1 assume !(0 != main_~p9~0#1); 11428#L150-1 assume !(0 != main_~p10~0#1); 11199#L155-1 [2023-11-06 23:06:33,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:33,473 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2023-11-06 23:06:33,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:33,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021165141] [2023-11-06 23:06:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:33,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:33,480 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:33,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:33,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:33,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1097020517, now seen corresponding path program 1 times [2023-11-06 23:06:33,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:33,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316929589] [2023-11-06 23:06:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:33,529 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 23:06:33,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:33,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316929589] [2023-11-06 23:06:33,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316929589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:33,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:33,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:33,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077410780] [2023-11-06 23:06:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:33,534 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:33,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:33,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:33,535 INFO L87 Difference]: Start difference. First operand 3650 states and 5314 transitions. cyclomatic complexity: 1792 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:33,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:33,585 INFO L93 Difference]: Finished difference Result 7170 states and 10242 transitions. [2023-11-06 23:06:33,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7170 states and 10242 transitions. [2023-11-06 23:06:33,652 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 7168 [2023-11-06 23:06:33,709 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7170 states to 7170 states and 10242 transitions. [2023-11-06 23:06:33,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7170 [2023-11-06 23:06:33,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7170 [2023-11-06 23:06:33,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7170 states and 10242 transitions. [2023-11-06 23:06:33,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:33,729 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7170 states and 10242 transitions. [2023-11-06 23:06:33,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states and 10242 transitions. [2023-11-06 23:06:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 7170. [2023-11-06 23:06:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 7170 states have (on average 1.4284518828451882) internal successors, (10242), 7169 states have internal predecessors, (10242), 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 23:06:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 10242 transitions. [2023-11-06 23:06:33,946 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7170 states and 10242 transitions. [2023-11-06 23:06:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:33,950 INFO L428 stractBuchiCegarLoop]: Abstraction has 7170 states and 10242 transitions. [2023-11-06 23:06:33,950 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-06 23:06:33,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7170 states and 10242 transitions. [2023-11-06 23:06:33,979 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 7168 [2023-11-06 23:06:33,979 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:33,980 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:33,980 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:33,980 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] [2023-11-06 23:06:33,980 INFO L748 eck$LassoCheckResult]: Stem: 22058#$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(16, 2);call #Ultimate.allocInit(12, 3); 22023#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_~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_~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_~cond~0#1; 22024#L155-1 [2023-11-06 23:06:33,981 INFO L750 eck$LassoCheckResult]: Loop: 22024#L155-1 assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 22197#L43 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; 22193#L68 assume !(0 != main_~p1~0#1); 22189#L68-2 assume !(0 != main_~p2~0#1); 22186#L72-1 assume !(0 != main_~p3~0#1); 22182#L76-1 assume !(0 != main_~p4~0#1); 22116#L80-1 assume !(0 != main_~p5~0#1); 22117#L84-1 assume !(0 != main_~p6~0#1); 22316#L88-1 assume !(0 != main_~p7~0#1); 22332#L92-1 assume !(0 != main_~p8~0#1); 22324#L96-1 assume !(0 != main_~p9~0#1); 22289#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 22286#L104-1 assume !(0 != main_~p1~0#1); 22284#L110-1 assume !(0 != main_~p2~0#1); 22281#L115-1 assume !(0 != main_~p3~0#1); 22278#L120-1 assume !(0 != main_~p4~0#1); 22257#L125-1 assume !(0 != main_~p5~0#1); 22258#L130-1 assume !(0 != main_~p6~0#1); 22272#L135-1 assume !(0 != main_~p7~0#1); 22232#L140-1 assume !(0 != main_~p8~0#1); 22230#L145-1 assume !(0 != main_~p9~0#1); 22202#L150-1 assume !(0 != main_~p10~0#1); 22024#L155-1 [2023-11-06 23:06:33,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2023-11-06 23:06:33,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:33,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864374170] [2023-11-06 23:06:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:33,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:33,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:33,993 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:33,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash -838855079, now seen corresponding path program 1 times [2023-11-06 23:06:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:33,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354711986] [2023-11-06 23:06:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:33,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:34,024 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 23:06:34,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:34,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354711986] [2023-11-06 23:06:34,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354711986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:34,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:34,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:06:34,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083789576] [2023-11-06 23:06:34,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:34,026 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:06:34,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:34,027 INFO L87 Difference]: Start difference. First operand 7170 states and 10242 transitions. cyclomatic complexity: 3328 Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:34,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:34,094 INFO L93 Difference]: Finished difference Result 14082 states and 19714 transitions. [2023-11-06 23:06:34,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14082 states and 19714 transitions. [2023-11-06 23:06:34,248 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 14080 [2023-11-06 23:06:34,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14082 states to 14082 states and 19714 transitions. [2023-11-06 23:06:34,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14082 [2023-11-06 23:06:34,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14082 [2023-11-06 23:06:34,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14082 states and 19714 transitions. [2023-11-06 23:06:34,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:34,383 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14082 states and 19714 transitions. [2023-11-06 23:06:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14082 states and 19714 transitions. [2023-11-06 23:06:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14082 to 14082. [2023-11-06 23:06:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14082 states, 14082 states have (on average 1.3999431898878) internal successors, (19714), 14081 states have internal predecessors, (19714), 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 23:06:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14082 states to 14082 states and 19714 transitions. [2023-11-06 23:06:34,770 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14082 states and 19714 transitions. [2023-11-06 23:06:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:34,771 INFO L428 stractBuchiCegarLoop]: Abstraction has 14082 states and 19714 transitions. [2023-11-06 23:06:34,771 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-06 23:06:34,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14082 states and 19714 transitions. [2023-11-06 23:06:34,839 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 14080 [2023-11-06 23:06:34,839 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:06:34,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:06:34,840 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:06:34,840 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] [2023-11-06 23:06:34,841 INFO L748 eck$LassoCheckResult]: Stem: 43314#$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(16, 2);call #Ultimate.allocInit(12, 3); 43281#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_~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_~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_~cond~0#1; 43282#L155-1 [2023-11-06 23:06:34,841 INFO L750 eck$LassoCheckResult]: Loop: 43282#L155-1 assume !false;havoc main_#t~nondet14#1;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 43404#L43 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; 43402#L68 assume !(0 != main_~p1~0#1); 43398#L68-2 assume !(0 != main_~p2~0#1); 43396#L72-1 assume !(0 != main_~p3~0#1); 43392#L76-1 assume !(0 != main_~p4~0#1); 43388#L80-1 assume !(0 != main_~p5~0#1); 43384#L84-1 assume !(0 != main_~p6~0#1); 43380#L88-1 assume !(0 != main_~p7~0#1); 43376#L92-1 assume !(0 != main_~p8~0#1); 43372#L96-1 assume !(0 != main_~p9~0#1); 43368#L100-1 assume !(0 != main_~p10~0#1); 43365#L104-1 assume !(0 != main_~p1~0#1); 43366#L110-1 assume !(0 != main_~p2~0#1); 43436#L115-1 assume !(0 != main_~p3~0#1); 43431#L120-1 assume !(0 != main_~p4~0#1); 43427#L125-1 assume !(0 != main_~p5~0#1); 43423#L130-1 assume !(0 != main_~p6~0#1); 43419#L135-1 assume !(0 != main_~p7~0#1); 43415#L140-1 assume !(0 != main_~p8~0#1); 43411#L145-1 assume !(0 != main_~p9~0#1); 43407#L150-1 assume !(0 != main_~p10~0#1); 43282#L155-1 [2023-11-06 23:06:34,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:34,842 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2023-11-06 23:06:34,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:34,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952630050] [2023-11-06 23:06:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:34,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:34,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:34,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:34,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:34,853 INFO L85 PathProgramCache]: Analyzing trace with hash -137790501, now seen corresponding path program 1 times [2023-11-06 23:06:34,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:34,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655901711] [2023-11-06 23:06:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:34,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:34,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:34,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:34,870 INFO L85 PathProgramCache]: Analyzing trace with hash -970235363, now seen corresponding path program 1 times [2023-11-06 23:06:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:34,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733956232] [2023-11-06 23:06:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:34,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:34,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:34,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:06:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:35,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:06:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:06:35,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 11:06:35 BoogieIcfgContainer [2023-11-06 23:06:35,483 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 23:06:35,484 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:06:35,484 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:06:35,484 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:06:35,485 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:31" (3/4) ... [2023-11-06 23:06:35,486 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 23:06:35,529 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:06:35,529 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:06:35,530 INFO L158 Benchmark]: Toolchain (without parser) took 4769.06ms. Allocated memory was 132.1MB in the beginning and 285.2MB in the end (delta: 153.1MB). Free memory was 91.1MB in the beginning and 117.7MB in the end (delta: -26.7MB). Peak memory consumption was 128.4MB. Max. memory is 16.1GB. [2023-11-06 23:06:35,530 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 132.1MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:06:35,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.07ms. Allocated memory is still 132.1MB. Free memory was 90.6MB in the beginning and 79.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:06:35,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.03ms. Allocated memory is still 132.1MB. Free memory was 79.7MB in the beginning and 77.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:06:35,531 INFO L158 Benchmark]: Boogie Preprocessor took 23.90ms. Allocated memory is still 132.1MB. Free memory was 77.8MB in the beginning and 76.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:06:35,532 INFO L158 Benchmark]: RCFGBuilder took 379.44ms. Allocated memory is still 132.1MB. Free memory was 76.4MB in the beginning and 63.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:06:35,532 INFO L158 Benchmark]: BuchiAutomizer took 3991.15ms. Allocated memory was 132.1MB in the beginning and 285.2MB in the end (delta: 153.1MB). Free memory was 63.8MB in the beginning and 120.9MB in the end (delta: -57.0MB). Peak memory consumption was 97.0MB. Max. memory is 16.1GB. [2023-11-06 23:06:35,533 INFO L158 Benchmark]: Witness Printer took 45.34ms. Allocated memory is still 285.2MB. Free memory was 120.9MB in the beginning and 117.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:06:35,535 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 132.1MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.07ms. Allocated memory is still 132.1MB. Free memory was 90.6MB in the beginning and 79.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.03ms. Allocated memory is still 132.1MB. Free memory was 79.7MB in the beginning and 77.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.90ms. Allocated memory is still 132.1MB. Free memory was 77.8MB in the beginning and 76.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 379.44ms. Allocated memory is still 132.1MB. Free memory was 76.4MB in the beginning and 63.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 3991.15ms. Allocated memory was 132.1MB in the beginning and 285.2MB in the end (delta: 153.1MB). Free memory was 63.8MB in the beginning and 120.9MB in the end (delta: -57.0MB). Peak memory consumption was 97.0MB. Max. memory is 16.1GB. * Witness Printer took 45.34ms. Allocated memory is still 285.2MB. Free memory was 120.9MB in the beginning and 117.7MB 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 9 terminating modules (9 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.9 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 14082 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 10 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 1.9s. Highest rank in rank-based complementation 0. Minimization of det autom 9. Minimization of nondet autom 0. Automata minimization 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.5s Buchi closure took 0.0s. 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, 372 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 1165 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 444 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 721 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI9 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: 41]: 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; [L39] int cond; Loop: [L41] COND TRUE 1 [L42] cond = __VERIFIER_nondet_int() [L43] COND FALSE !(cond == 0) [L46] lk1 = 0 [L48] lk2 = 0 [L50] lk3 = 0 [L52] lk4 = 0 [L54] lk5 = 0 [L56] lk6 = 0 [L58] lk7 = 0 [L60] lk8 = 0 [L62] lk9 = 0 [L64] lk10 = 0 [L68] COND FALSE !(p1 != 0) [L72] COND FALSE !(p2 != 0) [L76] COND FALSE !(p3 != 0) [L80] COND FALSE !(p4 != 0) [L84] COND FALSE !(p5 != 0) [L88] COND FALSE !(p6 != 0) [L92] COND FALSE !(p7 != 0) [L96] COND FALSE !(p8 != 0) [L100] COND FALSE !(p9 != 0) [L104] COND FALSE !(p10 != 0) [L110] COND FALSE !(p1 != 0) [L115] COND FALSE !(p2 != 0) [L120] COND FALSE !(p3 != 0) [L125] COND FALSE !(p4 != 0) [L130] COND FALSE !(p5 != 0) [L135] COND FALSE !(p6 != 0) [L140] COND FALSE !(p7 != 0) [L145] COND FALSE !(p8 != 0) [L150] COND FALSE !(p9 != 0) [L155] COND FALSE !(p10 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: 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; [L39] int cond; Loop: [L41] COND TRUE 1 [L42] cond = __VERIFIER_nondet_int() [L43] COND FALSE !(cond == 0) [L46] lk1 = 0 [L48] lk2 = 0 [L50] lk3 = 0 [L52] lk4 = 0 [L54] lk5 = 0 [L56] lk6 = 0 [L58] lk7 = 0 [L60] lk8 = 0 [L62] lk9 = 0 [L64] lk10 = 0 [L68] COND FALSE !(p1 != 0) [L72] COND FALSE !(p2 != 0) [L76] COND FALSE !(p3 != 0) [L80] COND FALSE !(p4 != 0) [L84] COND FALSE !(p5 != 0) [L88] COND FALSE !(p6 != 0) [L92] COND FALSE !(p7 != 0) [L96] COND FALSE !(p8 != 0) [L100] COND FALSE !(p9 != 0) [L104] COND FALSE !(p10 != 0) [L110] COND FALSE !(p1 != 0) [L115] COND FALSE !(p2 != 0) [L120] COND FALSE !(p3 != 0) [L125] COND FALSE !(p4 != 0) [L130] COND FALSE !(p5 != 0) [L135] COND FALSE !(p6 != 0) [L140] COND FALSE !(p7 != 0) [L145] COND FALSE !(p8 != 0) [L150] COND FALSE !(p9 != 0) [L155] COND FALSE !(p10 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 23:06:35,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3123284f-bdd2-496c-8505-46d9e6302570/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)