./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:10:16,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:10:16,595 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-27 20:10:16,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:10:16,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:10:16,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:10:16,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:10:16,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:10:16,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:10:16,634 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:10:16,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:10:16,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:10:16,635 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:10:16,635 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-27 20:10:16,636 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-27 20:10:16,636 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-27 20:10:16,636 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-27 20:10:16,636 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-27 20:10:16,636 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-27 20:10:16,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:10:16,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-27 20:10:16,636 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:10:16,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:10:16,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:10:16,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:10:16,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-27 20:10:16,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-27 20:10:16,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-27 20:10:16,637 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:10:16,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:10:16,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:10:16,638 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-27 20:10:16,638 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:10:16,638 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:10:16,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:10:16,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:10:16,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:10:16,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-27 20:10:16,639 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-27 20:10:16,640 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d [2024-11-27 20:10:16,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:10:17,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:10:17,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:10:17,012 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:10:17,012 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:10:17,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/locks/test_locks_12.c [2024-11-27 20:10:20,836 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/data/c319c2bc5/31d5deded05e4f78b8bcabece60bb71f/FLAG245d196b4 [2024-11-27 20:10:21,115 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:10:21,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/sv-benchmarks/c/locks/test_locks_12.c [2024-11-27 20:10:21,126 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/data/c319c2bc5/31d5deded05e4f78b8bcabece60bb71f/FLAG245d196b4 [2024-11-27 20:10:21,161 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/data/c319c2bc5/31d5deded05e4f78b8bcabece60bb71f [2024-11-27 20:10:21,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:10:21,171 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:10:21,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:10:21,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:10:21,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:10:21,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c98bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21, skipping insertion in model container [2024-11-27 20:10:21,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,222 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:10:21,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:10:21,468 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:10:21,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:10:21,540 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:10:21,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21 WrapperNode [2024-11-27 20:10:21,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:10:21,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:10:21,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:10:21,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:10:21,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,596 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 159 [2024-11-27 20:10:21,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:10:21,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:10:21,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:10:21,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:10:21,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,639 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:10:21,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,642 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,647 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:10:21,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:10:21,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:10:21,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:10:21,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (1/1) ... [2024-11-27 20:10:21,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 20:10:21,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:21,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 20:10:21,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-27 20:10:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:10:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:10:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:10:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:10:21,864 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:10:21,867 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:10:22,214 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-27 20:10:22,215 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:10:22,229 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:10:22,230 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:10:22,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:10:22 BoogieIcfgContainer [2024-11-27 20:10:22,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:10:22,232 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-27 20:10:22,232 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-27 20:10:22,241 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-27 20:10:22,242 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:10:22,242 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.11 08:10:21" (1/3) ... [2024-11-27 20:10:22,243 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@547bc659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 08:10:22, skipping insertion in model container [2024-11-27 20:10:22,244 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:10:22,244 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:10:21" (2/3) ... [2024-11-27 20:10:22,244 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@547bc659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 08:10:22, skipping insertion in model container [2024-11-27 20:10:22,244 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 20:10:22,245 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:10:22" (3/3) ... [2024-11-27 20:10:22,246 INFO L363 chiAutomizerObserver]: Analyzing ICFG test_locks_12.c [2024-11-27 20:10:22,327 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-27 20:10:22,327 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-27 20:10:22,327 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-27 20:10:22,327 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-27 20:10:22,327 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-27 20:10:22,329 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-27 20:10:22,329 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-27 20:10:22,329 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-27 20:10:22,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 46 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 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) [2024-11-27 20:10:22,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-27 20:10:22,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:22,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:22,369 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:22,369 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:22,369 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-27 20:10:22,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 46 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 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) [2024-11-27 20:10:22,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2024-11-27 20:10:22,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:22,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:22,376 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:22,376 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:22,387 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:22,388 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1;" "assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1;" "assume !(0 != main_~p3~0#1);" "assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1;" "assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1;" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1;" "assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1;" "assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1;" "assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1;" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:22,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-27 20:10:22,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:22,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105377777] [2024-11-27 20:10:22,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:22,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:22,525 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:22,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:22,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash -819199544, now seen corresponding path program 1 times [2024-11-27 20:10:22,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:22,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515803916] [2024-11-27 20:10:22,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:22,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:22,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515803916] [2024-11-27 20:10:22,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515803916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:22,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257917350] [2024-11-27 20:10:22,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:22,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:22,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:22,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:22,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:10:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:22,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:22,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:22,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:23,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257917350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:23,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:23,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:10:23,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639721412] [2024-11-27 20:10:23,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:23,057 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:23,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:23,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:23,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:23,100 INFO L87 Difference]: Start difference. First operand has 46 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 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 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:23,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:23,167 INFO L93 Difference]: Finished difference Result 85 states and 153 transitions. [2024-11-27 20:10:23,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 153 transitions. [2024-11-27 20:10:23,174 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2024-11-27 20:10:23,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 77 states and 123 transitions. [2024-11-27 20:10:23,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2024-11-27 20:10:23,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2024-11-27 20:10:23,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 123 transitions. [2024-11-27 20:10:23,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:23,197 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 123 transitions. [2024-11-27 20:10:23,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 123 transitions. [2024-11-27 20:10:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-27 20:10:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 76 states have internal predecessors, (123), 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) [2024-11-27 20:10:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2024-11-27 20:10:23,247 INFO L240 hiAutomatonCegarLoop]: Abstraction has 77 states and 123 transitions. [2024-11-27 20:10:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:23,255 INFO L425 stractBuchiCegarLoop]: Abstraction has 77 states and 123 transitions. [2024-11-27 20:10:23,255 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-27 20:10:23,255 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 123 transitions. [2024-11-27 20:10:23,263 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2024-11-27 20:10:23,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:23,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:23,264 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:23,264 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:23,264 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:23,265 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1;" "assume !(0 != main_~p3~0#1);" "assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1;" "assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1;" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1;" "assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1;" "assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1;" "assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1;" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:23,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:23,265 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-27 20:10:23,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:23,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023425342] [2024-11-27 20:10:23,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:23,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:23,283 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:23,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:23,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash -953213050, now seen corresponding path program 1 times [2024-11-27 20:10:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:23,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466675301] [2024-11-27 20:10:23,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:23,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:23,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:23,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466675301] [2024-11-27 20:10:23,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466675301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:23,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907329596] [2024-11-27 20:10:23,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:23,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:23,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:23,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:23,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:10:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:23,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:23,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:23,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:23,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907329596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:23,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:23,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:10:23,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856057085] [2024-11-27 20:10:23,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:23,598 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:23,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:23,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:23,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:23,603 INFO L87 Difference]: Start difference. First operand 77 states and 123 transitions. cyclomatic complexity: 48 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:23,645 INFO L93 Difference]: Finished difference Result 150 states and 238 transitions. [2024-11-27 20:10:23,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 238 transitions. [2024-11-27 20:10:23,682 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 148 [2024-11-27 20:10:23,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 150 states and 238 transitions. [2024-11-27 20:10:23,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 150 [2024-11-27 20:10:23,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 150 [2024-11-27 20:10:23,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 238 transitions. [2024-11-27 20:10:23,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:23,695 INFO L218 hiAutomatonCegarLoop]: Abstraction has 150 states and 238 transitions. [2024-11-27 20:10:23,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 238 transitions. [2024-11-27 20:10:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-27 20:10:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.5866666666666667) internal successors, (238), 149 states have internal predecessors, (238), 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) [2024-11-27 20:10:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 238 transitions. [2024-11-27 20:10:23,722 INFO L240 hiAutomatonCegarLoop]: Abstraction has 150 states and 238 transitions. [2024-11-27 20:10:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:23,723 INFO L425 stractBuchiCegarLoop]: Abstraction has 150 states and 238 transitions. [2024-11-27 20:10:23,724 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-27 20:10:23,724 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 238 transitions. [2024-11-27 20:10:23,727 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 148 [2024-11-27 20:10:23,730 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:23,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:23,731 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:23,731 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:23,731 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:23,732 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1;" "assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1;" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1;" "assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1;" "assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1;" "assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1;" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:23,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:23,732 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-11-27 20:10:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:23,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674749823] [2024-11-27 20:10:23,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:23,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:23,749 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:23,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:23,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1536315912, now seen corresponding path program 1 times [2024-11-27 20:10:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:23,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974477871] [2024-11-27 20:10:23,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:23,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:23,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974477871] [2024-11-27 20:10:23,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974477871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:23,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232433280] [2024-11-27 20:10:23,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:23,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:23,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:23,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:23,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:10:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:23,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:23,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:23,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:24,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232433280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:24,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:24,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:10:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67085646] [2024-11-27 20:10:24,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:24,005 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:24,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:24,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:24,006 INFO L87 Difference]: Start difference. First operand 150 states and 238 transitions. cyclomatic complexity: 92 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:24,047 INFO L93 Difference]: Finished difference Result 294 states and 462 transitions. [2024-11-27 20:10:24,047 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 294 states and 462 transitions. [2024-11-27 20:10:24,056 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 292 [2024-11-27 20:10:24,067 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 294 states to 294 states and 462 transitions. [2024-11-27 20:10:24,067 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 294 [2024-11-27 20:10:24,068 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 294 [2024-11-27 20:10:24,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 462 transitions. [2024-11-27 20:10:24,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:24,070 INFO L218 hiAutomatonCegarLoop]: Abstraction has 294 states and 462 transitions. [2024-11-27 20:10:24,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states and 462 transitions. [2024-11-27 20:10:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2024-11-27 20:10:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 294 states have (on average 1.5714285714285714) internal successors, (462), 293 states have internal predecessors, (462), 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) [2024-11-27 20:10:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 462 transitions. [2024-11-27 20:10:24,109 INFO L240 hiAutomatonCegarLoop]: Abstraction has 294 states and 462 transitions. [2024-11-27 20:10:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:24,111 INFO L425 stractBuchiCegarLoop]: Abstraction has 294 states and 462 transitions. [2024-11-27 20:10:24,111 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-27 20:10:24,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 294 states and 462 transitions. [2024-11-27 20:10:24,114 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 292 [2024-11-27 20:10:24,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:24,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:24,115 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:24,115 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:24,115 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:24,115 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1;" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1;" "assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1;" "assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1;" "assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1;" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:24,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-11-27 20:10:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:24,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642865857] [2024-11-27 20:10:24,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:24,122 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:24,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:24,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:24,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1959017738, now seen corresponding path program 1 times [2024-11-27 20:10:24,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:24,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607432460] [2024-11-27 20:10:24,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:24,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:24,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607432460] [2024-11-27 20:10:24,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607432460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:24,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231833919] [2024-11-27 20:10:24,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:24,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:24,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:24,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:10:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:24,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:24,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:24,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:24,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231833919] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:24,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:24,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:10:24,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684773384] [2024-11-27 20:10:24,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:24,360 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:24,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:24,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:24,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:24,365 INFO L87 Difference]: Start difference. First operand 294 states and 462 transitions. cyclomatic complexity: 176 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:24,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:24,401 INFO L93 Difference]: Finished difference Result 578 states and 898 transitions. [2024-11-27 20:10:24,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 578 states and 898 transitions. [2024-11-27 20:10:24,409 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 576 [2024-11-27 20:10:24,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 578 states to 578 states and 898 transitions. [2024-11-27 20:10:24,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 578 [2024-11-27 20:10:24,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 578 [2024-11-27 20:10:24,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 578 states and 898 transitions. [2024-11-27 20:10:24,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:24,432 INFO L218 hiAutomatonCegarLoop]: Abstraction has 578 states and 898 transitions. [2024-11-27 20:10:24,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states and 898 transitions. [2024-11-27 20:10:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-11-27 20:10:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 578 states have (on average 1.5536332179930796) internal successors, (898), 577 states have internal predecessors, (898), 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) [2024-11-27 20:10:24,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 898 transitions. [2024-11-27 20:10:24,482 INFO L240 hiAutomatonCegarLoop]: Abstraction has 578 states and 898 transitions. [2024-11-27 20:10:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:24,484 INFO L425 stractBuchiCegarLoop]: Abstraction has 578 states and 898 transitions. [2024-11-27 20:10:24,484 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-27 20:10:24,484 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 578 states and 898 transitions. [2024-11-27 20:10:24,488 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 576 [2024-11-27 20:10:24,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:24,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:24,489 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:24,489 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:24,489 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:24,489 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1;" "assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1;" "assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1;" "assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1;" "assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1;" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:24,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2024-11-27 20:10:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:24,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697789891] [2024-11-27 20:10:24,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:24,497 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:24,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:24,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1141369288, now seen corresponding path program 1 times [2024-11-27 20:10:24,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565440996] [2024-11-27 20:10:24,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:24,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565440996] [2024-11-27 20:10:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565440996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533126827] [2024-11-27 20:10:24,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:24,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:24,550 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:24,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:10:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:24,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:24,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:24,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:24,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533126827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:24,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:24,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:10:24,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32128227] [2024-11-27 20:10:24,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:24,680 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:24,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:24,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:24,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:24,681 INFO L87 Difference]: Start difference. First operand 578 states and 898 transitions. cyclomatic complexity: 336 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:24,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:24,703 INFO L93 Difference]: Finished difference Result 1138 states and 1746 transitions. [2024-11-27 20:10:24,703 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1138 states and 1746 transitions. [2024-11-27 20:10:24,715 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1136 [2024-11-27 20:10:24,723 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1138 states to 1138 states and 1746 transitions. [2024-11-27 20:10:24,723 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1138 [2024-11-27 20:10:24,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1138 [2024-11-27 20:10:24,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1138 states and 1746 transitions. [2024-11-27 20:10:24,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:24,727 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2024-11-27 20:10:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states and 1746 transitions. [2024-11-27 20:10:24,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2024-11-27 20:10:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1138 states have (on average 1.5342706502636203) internal successors, (1746), 1137 states have internal predecessors, (1746), 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) [2024-11-27 20:10:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1746 transitions. [2024-11-27 20:10:24,759 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2024-11-27 20:10:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:24,760 INFO L425 stractBuchiCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2024-11-27 20:10:24,760 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-27 20:10:24,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1138 states and 1746 transitions. [2024-11-27 20:10:24,768 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1136 [2024-11-27 20:10:24,768 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:24,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:24,769 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:24,769 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:24,769 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:24,769 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1;" "assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1;" "assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1;" "assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1;" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:24,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2024-11-27 20:10:24,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:24,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461254277] [2024-11-27 20:10:24,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:24,776 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:24,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:24,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash -547574454, now seen corresponding path program 1 times [2024-11-27 20:10:24,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:24,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98332887] [2024-11-27 20:10:24,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:24,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:24,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98332887] [2024-11-27 20:10:24,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98332887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:24,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440335315] [2024-11-27 20:10:24,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:24,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:24,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:24,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:24,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:10:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:24,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:24,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:24,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:24,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440335315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:24,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:24,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:10:24,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925602873] [2024-11-27 20:10:24,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:24,998 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:24,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:25,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:25,002 INFO L87 Difference]: Start difference. First operand 1138 states and 1746 transitions. cyclomatic complexity: 640 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:25,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:25,039 INFO L93 Difference]: Finished difference Result 2242 states and 3394 transitions. [2024-11-27 20:10:25,039 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2242 states and 3394 transitions. [2024-11-27 20:10:25,069 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2240 [2024-11-27 20:10:25,084 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2242 states to 2242 states and 3394 transitions. [2024-11-27 20:10:25,084 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2242 [2024-11-27 20:10:25,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2242 [2024-11-27 20:10:25,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2242 states and 3394 transitions. [2024-11-27 20:10:25,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:25,094 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2024-11-27 20:10:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states and 3394 transitions. [2024-11-27 20:10:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2242. [2024-11-27 20:10:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2242 states have (on average 1.5138269402319358) internal successors, (3394), 2241 states have internal predecessors, (3394), 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) [2024-11-27 20:10:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3394 transitions. [2024-11-27 20:10:25,169 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2024-11-27 20:10:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:25,171 INFO L425 stractBuchiCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2024-11-27 20:10:25,171 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-27 20:10:25,171 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2242 states and 3394 transitions. [2024-11-27 20:10:25,189 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2240 [2024-11-27 20:10:25,189 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:25,189 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:25,191 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:25,191 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:25,191 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:25,191 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1;" "assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1;" "assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1;" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:25,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:25,192 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2024-11-27 20:10:25,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:25,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512444268] [2024-11-27 20:10:25,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:25,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:25,200 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:25,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:25,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:25,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1753248136, now seen corresponding path program 1 times [2024-11-27 20:10:25,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:25,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665891031] [2024-11-27 20:10:25,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:25,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:25,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:25,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665891031] [2024-11-27 20:10:25,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665891031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:25,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877166144] [2024-11-27 20:10:25,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:25,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:25,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:25,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:25,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:10:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:25,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:25,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:25,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:25,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877166144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:25,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:25,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:10:25,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616815161] [2024-11-27 20:10:25,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:25,378 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:25,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:25,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:25,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:25,380 INFO L87 Difference]: Start difference. First operand 2242 states and 3394 transitions. cyclomatic complexity: 1216 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:25,423 INFO L93 Difference]: Finished difference Result 4418 states and 6594 transitions. [2024-11-27 20:10:25,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4418 states and 6594 transitions. [2024-11-27 20:10:25,467 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4416 [2024-11-27 20:10:25,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4418 states to 4418 states and 6594 transitions. [2024-11-27 20:10:25,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4418 [2024-11-27 20:10:25,500 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4418 [2024-11-27 20:10:25,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4418 states and 6594 transitions. [2024-11-27 20:10:25,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:25,508 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2024-11-27 20:10:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states and 6594 transitions. [2024-11-27 20:10:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4418. [2024-11-27 20:10:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4418 states, 4418 states have (on average 1.4925305568130376) internal successors, (6594), 4417 states have internal predecessors, (6594), 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) [2024-11-27 20:10:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 6594 transitions. [2024-11-27 20:10:25,653 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2024-11-27 20:10:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:25,655 INFO L425 stractBuchiCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2024-11-27 20:10:25,655 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-27 20:10:25,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4418 states and 6594 transitions. [2024-11-27 20:10:25,682 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4416 [2024-11-27 20:10:25,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:25,682 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:25,684 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:25,684 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:25,684 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:25,684 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1;" "assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1;" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:25,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2024-11-27 20:10:25,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:25,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401817759] [2024-11-27 20:10:25,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:25,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:25,692 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:25,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:25,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash 164900234, now seen corresponding path program 1 times [2024-11-27 20:10:25,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:25,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258962590] [2024-11-27 20:10:25,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:25,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:25,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:25,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258962590] [2024-11-27 20:10:25,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258962590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:25,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555376312] [2024-11-27 20:10:25,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:25,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:25,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:25,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:25,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:10:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:25,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:25,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:25,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:25,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555376312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:25,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:25,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:10:25,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281111419] [2024-11-27 20:10:25,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:25,865 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:25,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:25,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:25,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:25,867 INFO L87 Difference]: Start difference. First operand 4418 states and 6594 transitions. cyclomatic complexity: 2304 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:25,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:25,929 INFO L93 Difference]: Finished difference Result 8706 states and 12802 transitions. [2024-11-27 20:10:25,929 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8706 states and 12802 transitions. [2024-11-27 20:10:26,056 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 8704 [2024-11-27 20:10:26,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8706 states to 8706 states and 12802 transitions. [2024-11-27 20:10:26,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8706 [2024-11-27 20:10:26,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8706 [2024-11-27 20:10:26,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8706 states and 12802 transitions. [2024-11-27 20:10:26,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:26,134 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2024-11-27 20:10:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8706 states and 12802 transitions. [2024-11-27 20:10:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8706 to 8706. [2024-11-27 20:10:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8706 states, 8706 states have (on average 1.4704801286469102) internal successors, (12802), 8705 states have internal predecessors, (12802), 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) [2024-11-27 20:10:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8706 states to 8706 states and 12802 transitions. [2024-11-27 20:10:26,410 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2024-11-27 20:10:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:26,411 INFO L425 stractBuchiCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2024-11-27 20:10:26,413 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-11-27 20:10:26,413 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8706 states and 12802 transitions. [2024-11-27 20:10:26,450 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 8704 [2024-11-27 20:10:26,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:26,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:26,452 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:26,453 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:26,453 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:26,453 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1;" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:26,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2024-11-27 20:10:26,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:26,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675434053] [2024-11-27 20:10:26,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:26,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:26,459 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:26,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:26,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash -856168120, now seen corresponding path program 1 times [2024-11-27 20:10:26,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683354604] [2024-11-27 20:10:26,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:26,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:26,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:26,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683354604] [2024-11-27 20:10:26,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683354604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:26,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510650983] [2024-11-27 20:10:26,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:26,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:26,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:26,506 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:26,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:10:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:26,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:26,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:26,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:26,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510650983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:26,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:26,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:10:26,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758179511] [2024-11-27 20:10:26,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:26,611 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:26,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:26,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:26,612 INFO L87 Difference]: Start difference. First operand 8706 states and 12802 transitions. cyclomatic complexity: 4352 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:26,681 INFO L93 Difference]: Finished difference Result 17154 states and 24834 transitions. [2024-11-27 20:10:26,681 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17154 states and 24834 transitions. [2024-11-27 20:10:26,816 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 17152 [2024-11-27 20:10:26,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17154 states to 17154 states and 24834 transitions. [2024-11-27 20:10:26,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17154 [2024-11-27 20:10:27,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17154 [2024-11-27 20:10:27,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17154 states and 24834 transitions. [2024-11-27 20:10:27,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:27,096 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2024-11-27 20:10:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17154 states and 24834 transitions. [2024-11-27 20:10:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17154 to 17154. [2024-11-27 20:10:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17154 states, 17154 states have (on average 1.4477089891570478) internal successors, (24834), 17153 states have internal predecessors, (24834), 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) [2024-11-27 20:10:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17154 states to 17154 states and 24834 transitions. [2024-11-27 20:10:27,588 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2024-11-27 20:10:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:27,590 INFO L425 stractBuchiCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2024-11-27 20:10:27,590 INFO L332 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2024-11-27 20:10:27,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17154 states and 24834 transitions. [2024-11-27 20:10:27,678 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 17152 [2024-11-27 20:10:27,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:27,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:27,680 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:27,680 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:27,680 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:27,681 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:27,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:27,682 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2024-11-27 20:10:27,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:27,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735231557] [2024-11-27 20:10:27,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:27,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:27,693 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:27,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:27,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:27,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2136031798, now seen corresponding path program 1 times [2024-11-27 20:10:27,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:27,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582990645] [2024-11-27 20:10:27,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:27,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:27,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 20:10:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582990645] [2024-11-27 20:10:27,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582990645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:27,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404114580] [2024-11-27 20:10:27,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:27,779 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:27,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:10:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:27,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:10:27,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:27,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404114580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:27,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:27,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-27 20:10:27,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499293778] [2024-11-27 20:10:27,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:27,923 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-27 20:10:27,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 20:10:27,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:27,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:27,924 INFO L87 Difference]: Start difference. First operand 17154 states and 24834 transitions. cyclomatic complexity: 8192 Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:10:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:28,086 INFO L93 Difference]: Finished difference Result 33794 states and 48130 transitions. [2024-11-27 20:10:28,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33794 states and 48130 transitions. [2024-11-27 20:10:28,317 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 33792 [2024-11-27 20:10:28,827 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33794 states to 33794 states and 48130 transitions. [2024-11-27 20:10:28,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33794 [2024-11-27 20:10:28,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33794 [2024-11-27 20:10:28,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33794 states and 48130 transitions. [2024-11-27 20:10:28,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 20:10:28,922 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2024-11-27 20:10:28,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33794 states and 48130 transitions. [2024-11-27 20:10:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33794 to 33794. [2024-11-27 20:10:29,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33794 states, 33794 states have (on average 1.4242173166834349) internal successors, (48130), 33793 states have internal predecessors, (48130), 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) [2024-11-27 20:10:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33794 states to 33794 states and 48130 transitions. [2024-11-27 20:10:29,879 INFO L240 hiAutomatonCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2024-11-27 20:10:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:29,881 INFO L425 stractBuchiCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2024-11-27 20:10:29,881 INFO L332 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2024-11-27 20:10:29,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33794 states and 48130 transitions. [2024-11-27 20:10:30,126 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 33792 [2024-11-27 20:10:30,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 20:10:30,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 20:10:30,128 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 20:10:30,128 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:30,128 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1;" [2024-11-27 20:10:30,128 INFO L749 eck$LassoCheckResult]: Loop: "havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;" "assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" "assume !(0 != main_~p1~0#1);" "assume !(0 != main_~p2~0#1);" "assume !(0 != main_~p3~0#1);" "assume !(0 != main_~p4~0#1);" "assume !(0 != main_~p5~0#1);" "assume !(0 != main_~p6~0#1);" "assume !(0 != main_~p7~0#1);" "assume !(0 != main_~p8~0#1);" "assume !(0 != main_~p9~0#1);" "assume !(0 != main_~p10~0#1);" "assume !(0 != main_~p11~0#1);" "assume !(0 != main_~p12~0#1);" [2024-11-27 20:10:30,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2024-11-27 20:10:30,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:30,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33800283] [2024-11-27 20:10:30,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:30,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:30,138 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:30,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:30,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:30,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1572129484, now seen corresponding path program 1 times [2024-11-27 20:10:30,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:30,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913432432] [2024-11-27 20:10:30,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:30,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:30,159 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:30,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:30,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1068122098, now seen corresponding path program 1 times [2024-11-27 20:10:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 20:10:30,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555845596] [2024-11-27 20:10:30,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:30,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:30,201 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:30,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 20:10:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:31,472 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:10:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:10:31,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.11 08:10:31 BoogieIcfgContainer [2024-11-27 20:10:31,538 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-27 20:10:31,539 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:10:31,540 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:10:31,540 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:10:31,542 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:10:22" (3/4) ... [2024-11-27 20:10:31,546 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-27 20:10:31,614 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:10:31,615 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:10:31,618 INFO L158 Benchmark]: Toolchain (without parser) took 10447.33ms. Allocated memory was 142.6MB in the beginning and 813.7MB in the end (delta: 671.1MB). Free memory was 117.3MB in the beginning and 493.8MB in the end (delta: -376.5MB). Peak memory consumption was 297.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:31,619 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:10:31,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.97ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 105.7MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:31,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.19ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.2MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:31,620 INFO L158 Benchmark]: Boogie Preprocessor took 75.87ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:10:31,621 INFO L158 Benchmark]: RCFGBuilder took 556.33ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 88.2MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:31,622 INFO L158 Benchmark]: BuchiAutomizer took 9306.22ms. Allocated memory was 142.6MB in the beginning and 813.7MB in the end (delta: 671.1MB). Free memory was 88.2MB in the beginning and 496.9MB in the end (delta: -408.7MB). Peak memory consumption was 263.8MB. Max. memory is 16.1GB. [2024-11-27 20:10:31,623 INFO L158 Benchmark]: Witness Printer took 76.40ms. Allocated memory is still 813.7MB. Free memory was 496.9MB in the beginning and 493.8MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:10:31,625 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.97ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 105.7MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.19ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.2MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.87ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 556.33ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 88.2MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9306.22ms. Allocated memory was 142.6MB in the beginning and 813.7MB in the end (delta: 671.1MB). Free memory was 88.2MB in the beginning and 496.9MB in the end (delta: -408.7MB). Peak memory consumption was 263.8MB. Max. memory is 16.1GB. * Witness Printer took 76.40ms. Allocated memory is still 813.7MB. Free memory was 496.9MB in the beginning and 493.8MB in the end (delta: 3.1MB). Peak memory consumption was 8.4MB. 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 10 terminating modules (10 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.10 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 33794 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.1s and 11 iterations. TraceHistogramMax:1. Analysis of lassos took 4.0s. Construction of modules took 0.1s. Büchi inclusion checks took 4.4s. Highest rank in rank-based complementation 0. Minimization of det autom 10. Minimization of nondet autom 0. Automata minimization 2.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 1.4s Buchi closure took 0.1s. 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, 494 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 494 mSDsluCounter, 1550 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 594 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 956 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI10 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: 47]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L45] int cond; Loop: [L48] cond = __VERIFIER_nondet_int() [L49] COND FALSE !(cond == 0) [L52] lk1 = 0 [L54] lk2 = 0 [L56] lk3 = 0 [L58] lk4 = 0 [L60] lk5 = 0 [L62] lk6 = 0 [L64] lk7 = 0 [L66] lk8 = 0 [L68] lk9 = 0 [L70] lk10 = 0 [L72] lk11 = 0 [L74] lk12 = 0 [L78] COND FALSE !(p1 != 0) [L82] COND FALSE !(p2 != 0) [L86] COND FALSE !(p3 != 0) [L90] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L98] COND FALSE !(p6 != 0) [L102] COND FALSE !(p7 != 0) [L106] COND FALSE !(p8 != 0) [L110] COND FALSE !(p9 != 0) [L114] COND FALSE !(p10 != 0) [L118] COND FALSE !(p11 != 0) [L122] COND FALSE !(p12 != 0) [L128] COND FALSE !(p1 != 0) [L133] COND FALSE !(p2 != 0) [L138] COND FALSE !(p3 != 0) [L143] COND FALSE !(p4 != 0) [L148] COND FALSE !(p5 != 0) [L153] COND FALSE !(p6 != 0) [L158] COND FALSE !(p7 != 0) [L163] COND FALSE !(p8 != 0) [L168] COND FALSE !(p9 != 0) [L173] COND FALSE !(p10 != 0) [L178] COND FALSE !(p11 != 0) [L183] COND FALSE !(p12 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 47]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L45] int cond; Loop: [L48] cond = __VERIFIER_nondet_int() [L49] COND FALSE !(cond == 0) [L52] lk1 = 0 [L54] lk2 = 0 [L56] lk3 = 0 [L58] lk4 = 0 [L60] lk5 = 0 [L62] lk6 = 0 [L64] lk7 = 0 [L66] lk8 = 0 [L68] lk9 = 0 [L70] lk10 = 0 [L72] lk11 = 0 [L74] lk12 = 0 [L78] COND FALSE !(p1 != 0) [L82] COND FALSE !(p2 != 0) [L86] COND FALSE !(p3 != 0) [L90] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L98] COND FALSE !(p6 != 0) [L102] COND FALSE !(p7 != 0) [L106] COND FALSE !(p8 != 0) [L110] COND FALSE !(p9 != 0) [L114] COND FALSE !(p10 != 0) [L118] COND FALSE !(p11 != 0) [L122] COND FALSE !(p12 != 0) [L128] COND FALSE !(p1 != 0) [L133] COND FALSE !(p2 != 0) [L138] COND FALSE !(p3 != 0) [L143] COND FALSE !(p4 != 0) [L148] COND FALSE !(p5 != 0) [L153] COND FALSE !(p6 != 0) [L158] COND FALSE !(p7 != 0) [L163] COND FALSE !(p8 != 0) [L168] COND FALSE !(p9 != 0) [L173] COND FALSE !(p10 != 0) [L178] COND FALSE !(p11 != 0) [L183] COND FALSE !(p12 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-27 20:10:31,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:10:31,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:10:32,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:10:32,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:32,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:10:32,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:32,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:33,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:33,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:10:33,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:10:33,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f1e3f0-8edc-4fa8-a229-502157ca557f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)