./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme --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 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:49:52,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:49:52,631 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-26 10:49:52,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:49:52,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:49:52,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:49:52,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:49:52,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:49:52,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:49:52,693 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:49:52,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:49:52,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:49:52,696 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:49:52,698 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 10:49:52,699 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 10:49:52,699 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 10:49:52,700 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 10:49:52,700 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 10:49:52,701 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 10:49:52,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:49:52,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 10:49:52,702 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:49:52,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:49:52,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:49:52,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:49:52,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 10:49:52,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 10:49:52,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 10:49:52,706 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:49:52,706 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:49:52,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:49:52,708 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 10:49:52,708 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:49:52,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:49:52,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:49:52,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:49:52,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:49:52,710 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 10:49:52,710 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05c715fd95d2209519e9aa0425ca71b72050ac0ff5d332c8a9deb8ead8471230 [2023-11-26 10:49:53,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:49:53,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:49:53,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:49:53,127 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:49:53,128 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:49:53,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/locks/test_locks_7.c [2023-11-26 10:49:56,448 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:49:56,700 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:49:56,701 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/sv-benchmarks/c/locks/test_locks_7.c [2023-11-26 10:49:56,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/data/1ee782ef0/d3e11fb0faea4eb39ee142a2bb10daa0/FLAG56e13cfa2 [2023-11-26 10:49:57,040 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/data/1ee782ef0/d3e11fb0faea4eb39ee142a2bb10daa0 [2023-11-26 10:49:57,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:49:57,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:49:57,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:57,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:49:57,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:49:57,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698532be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57, skipping insertion in model container [2023-11-26 10:49:57,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:49:57,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:57,301 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:49:57,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:57,354 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:49:57,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57 WrapperNode [2023-11-26 10:49:57,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:57,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:57,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:49:57,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:49:57,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,394 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2023-11-26 10:49:57,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:57,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:49:57,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:49:57,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:49:57,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,422 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]. [2023-11-26 10:49:57,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:49:57,445 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:49:57,445 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:49:57,446 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:49:57,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (1/1) ... [2023-11-26 10:49:57,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:49:57,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:57,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:49:57,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 10:49:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:49:57,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:49:57,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:49:57,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:49:57,638 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:49:57,649 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:49:57,826 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:49:57,838 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:49:57,838 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:49:57,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:57 BoogieIcfgContainer [2023-11-26 10:49:57,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:49:57,840 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 10:49:57,840 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 10:49:57,845 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 10:49:57,845 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:49:57,846 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 10:49:57" (1/3) ... [2023-11-26 10:49:57,847 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ab3131d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:49:57, skipping insertion in model container [2023-11-26 10:49:57,847 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:49:57,847 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:57" (2/3) ... [2023-11-26 10:49:57,848 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ab3131d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:49:57, skipping insertion in model container [2023-11-26 10:49:57,848 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:49:57,848 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:57" (3/3) ... [2023-11-26 10:49:57,849 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_7.c [2023-11-26 10:49:57,927 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 10:49:57,927 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 10:49:57,927 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 10:49:57,928 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 10:49:57,929 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 10:49:57,929 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 10:49:57,929 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 10:49:57,930 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 10:49:57,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:57,980 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-26 10:49:57,981 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:49:57,981 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:49:57,986 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:49:57,987 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:57,987 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 10:49:57,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:57,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-26 10:49:57,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:49:57,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:49:57,991 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:49:57,991 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:57,997 INFO L748 eck$LassoCheckResult]: Stem: 29#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_~cond~0#1; 17#L113-1true [2023-11-26 10:49:57,998 INFO L750 eck$LassoCheckResult]: Loop: 17#L113-1true assume !false;havoc main_#t~nondet11#1;main_~cond~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1; 27#L34true 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; 30#L53true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 3#L53-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 13#L57-1true assume !(0 != main_~p3~0#1); 9#L61-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 24#L65-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 26#L69-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 11#L73-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 23#L77-1true assume !(0 != main_~p1~0#1); 31#L83-1true assume !(0 != main_~p2~0#1); 15#L88-1true assume !(0 != main_~p3~0#1); 10#L93-1true assume !(0 != main_~p4~0#1); 16#L98-1true assume !(0 != main_~p5~0#1); 7#L103-1true assume !(0 != main_~p6~0#1); 14#L108-1true assume !(0 != main_~p7~0#1); 17#L113-1true [2023-11-26 10:49:58,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-26 10:49:58,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755350062] [2023-11-26 10:49:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:58,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2067454588, now seen corresponding path program 1 times [2023-11-26 10:49:58,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944530639] [2023-11-26 10:49:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:58,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:58,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944530639] [2023-11-26 10:49:58,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944530639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:58,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:58,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:58,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140157334] [2023-11-26 10:49:58,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:58,245 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:49:58,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:58,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:58,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:58,283 INFO L87 Difference]: Start difference. First operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:58,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:58,319 INFO L93 Difference]: Finished difference Result 55 states and 93 transitions. [2023-11-26 10:49:58,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 93 transitions. [2023-11-26 10:49:58,324 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2023-11-26 10:49:58,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 47 states and 73 transitions. [2023-11-26 10:49:58,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2023-11-26 10:49:58,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2023-11-26 10:49:58,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 73 transitions. [2023-11-26 10:49:58,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:58,337 INFO L218 hiAutomatonCegarLoop]: Abstraction has 47 states and 73 transitions. [2023-11-26 10:49:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 73 transitions. [2023-11-26 10:49:58,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-26 10:49:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 47 states have (on average 1.553191489361702) internal successors, (73), 46 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2023-11-26 10:49:58,386 INFO L240 hiAutomatonCegarLoop]: Abstraction has 47 states and 73 transitions. [2023-11-26 10:49:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:58,393 INFO L428 stractBuchiCegarLoop]: Abstraction has 47 states and 73 transitions. [2023-11-26 10:49:58,393 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 10:49:58,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 73 transitions. [2023-11-26 10:49:58,400 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2023-11-26 10:49:58,400 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:49:58,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:49:58,401 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:49:58,402 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:58,402 INFO L748 eck$LassoCheckResult]: Stem: 120#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 99#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_~cond~0#1; 100#L113-1 [2023-11-26 10:49:58,402 INFO L750 eck$LassoCheckResult]: Loop: 100#L113-1 assume !false;havoc main_#t~nondet11#1;main_~cond~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1; 115#L34 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; 119#L53 assume !(0 != main_~p1~0#1); 122#L53-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 141#L57-1 assume !(0 != main_~p3~0#1); 140#L61-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 139#L65-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 138#L69-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 137#L73-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 136#L77-1 assume !(0 != main_~p1~0#1); 135#L83-1 assume !(0 != main_~p2~0#1); 133#L88-1 assume !(0 != main_~p3~0#1); 131#L93-1 assume !(0 != main_~p4~0#1); 128#L98-1 assume !(0 != main_~p5~0#1); 103#L103-1 assume !(0 != main_~p6~0#1); 105#L108-1 assume !(0 != main_~p7~0#1); 100#L113-1 [2023-11-26 10:49:58,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-26 10:49:58,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490728193] [2023-11-26 10:49:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,423 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:58,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1216395458, now seen corresponding path program 1 times [2023-11-26 10:49:58,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160813331] [2023-11-26 10:49:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:58,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:58,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160813331] [2023-11-26 10:49:58,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160813331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:58,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:58,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104588574] [2023-11-26 10:49:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:58,535 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:49:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:58,537 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. cyclomatic complexity: 28 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:58,570 INFO L93 Difference]: Finished difference Result 90 states and 138 transitions. [2023-11-26 10:49:58,571 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 138 transitions. [2023-11-26 10:49:58,573 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 88 [2023-11-26 10:49:58,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 90 states and 138 transitions. [2023-11-26 10:49:58,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 90 [2023-11-26 10:49:58,575 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2023-11-26 10:49:58,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 138 transitions. [2023-11-26 10:49:58,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:58,577 INFO L218 hiAutomatonCegarLoop]: Abstraction has 90 states and 138 transitions. [2023-11-26 10:49:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 138 transitions. [2023-11-26 10:49:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-11-26 10:49:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 90 states have (on average 1.5333333333333334) internal successors, (138), 89 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 138 transitions. [2023-11-26 10:49:58,590 INFO L240 hiAutomatonCegarLoop]: Abstraction has 90 states and 138 transitions. [2023-11-26 10:49:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:58,594 INFO L428 stractBuchiCegarLoop]: Abstraction has 90 states and 138 transitions. [2023-11-26 10:49:58,594 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-26 10:49:58,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 138 transitions. [2023-11-26 10:49:58,596 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 88 [2023-11-26 10:49:58,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:49:58,596 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:49:58,597 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:49:58,597 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:58,597 INFO L748 eck$LassoCheckResult]: Stem: 272#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_~cond~0#1; 243#L113-1 [2023-11-26 10:49:58,597 INFO L750 eck$LassoCheckResult]: Loop: 243#L113-1 assume !false;havoc main_#t~nondet11#1;main_~cond~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1; 289#L34 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; 290#L53 assume !(0 != main_~p1~0#1); 305#L53-2 assume !(0 != main_~p2~0#1); 254#L57-1 assume !(0 != main_~p3~0#1); 249#L61-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 250#L65-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 268#L69-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 269#L73-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 297#L77-1 assume !(0 != main_~p1~0#1); 274#L83-1 assume !(0 != main_~p2~0#1); 257#L88-1 assume !(0 != main_~p3~0#1); 259#L93-1 assume !(0 != main_~p4~0#1); 260#L98-1 assume !(0 != main_~p5~0#1); 261#L103-1 assume !(0 != main_~p6~0#1); 308#L108-1 assume !(0 != main_~p7~0#1); 243#L113-1 [2023-11-26 10:49:58,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,598 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-26 10:49:58,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791026040] [2023-11-26 10:49:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:58,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,627 INFO L85 PathProgramCache]: Analyzing trace with hash 629589444, now seen corresponding path program 1 times [2023-11-26 10:49:58,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998688129] [2023-11-26 10:49:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:58,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998688129] [2023-11-26 10:49:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998688129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:58,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:58,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410605077] [2023-11-26 10:49:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:58,666 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:49:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:58,667 INFO L87 Difference]: Start difference. First operand 90 states and 138 transitions. cyclomatic complexity: 52 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:58,686 INFO L93 Difference]: Finished difference Result 174 states and 262 transitions. [2023-11-26 10:49:58,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174 states and 262 transitions. [2023-11-26 10:49:58,690 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 172 [2023-11-26 10:49:58,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174 states to 174 states and 262 transitions. [2023-11-26 10:49:58,692 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 174 [2023-11-26 10:49:58,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2023-11-26 10:49:58,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 262 transitions. [2023-11-26 10:49:58,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:58,695 INFO L218 hiAutomatonCegarLoop]: Abstraction has 174 states and 262 transitions. [2023-11-26 10:49:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 262 transitions. [2023-11-26 10:49:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-11-26 10:49:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 174 states have (on average 1.5057471264367817) internal successors, (262), 173 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 262 transitions. [2023-11-26 10:49:58,719 INFO L240 hiAutomatonCegarLoop]: Abstraction has 174 states and 262 transitions. [2023-11-26 10:49:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:58,721 INFO L428 stractBuchiCegarLoop]: Abstraction has 174 states and 262 transitions. [2023-11-26 10:49:58,721 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-26 10:49:58,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 262 transitions. [2023-11-26 10:49:58,724 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 172 [2023-11-26 10:49:58,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:49:58,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:49:58,725 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:49:58,725 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:58,726 INFO L748 eck$LassoCheckResult]: Stem: 540#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 512#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_~cond~0#1; 513#L113-1 [2023-11-26 10:49:58,726 INFO L750 eck$LassoCheckResult]: Loop: 513#L113-1 assume !false;havoc main_#t~nondet11#1;main_~cond~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1; 574#L34 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; 569#L53 assume !(0 != main_~p1~0#1); 570#L53-2 assume !(0 != main_~p2~0#1); 626#L57-1 assume !(0 != main_~p3~0#1); 623#L61-1 assume !(0 != main_~p4~0#1); 619#L65-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 614#L69-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 610#L73-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 606#L77-1 assume !(0 != main_~p1~0#1); 605#L83-1 assume !(0 != main_~p2~0#1); 604#L88-1 assume !(0 != main_~p3~0#1); 601#L93-1 assume !(0 != main_~p4~0#1); 599#L98-1 assume !(0 != main_~p5~0#1); 598#L103-1 assume !(0 != main_~p6~0#1); 596#L108-1 assume !(0 != main_~p7~0#1); 513#L113-1 [2023-11-26 10:49:58,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-26 10:49:58,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049956257] [2023-11-26 10:49:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,739 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:58,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1330654022, now seen corresponding path program 1 times [2023-11-26 10:49:58,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155258284] [2023-11-26 10:49:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:58,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:58,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155258284] [2023-11-26 10:49:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155258284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:58,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:58,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706571222] [2023-11-26 10:49:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:58,785 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:49:58,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:58,787 INFO L87 Difference]: Start difference. First operand 174 states and 262 transitions. cyclomatic complexity: 96 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:58,823 INFO L93 Difference]: Finished difference Result 338 states and 498 transitions. [2023-11-26 10:49:58,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 338 states and 498 transitions. [2023-11-26 10:49:58,828 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 336 [2023-11-26 10:49:58,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 338 states to 338 states and 498 transitions. [2023-11-26 10:49:58,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 338 [2023-11-26 10:49:58,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 338 [2023-11-26 10:49:58,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 338 states and 498 transitions. [2023-11-26 10:49:58,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:58,850 INFO L218 hiAutomatonCegarLoop]: Abstraction has 338 states and 498 transitions. [2023-11-26 10:49:58,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states and 498 transitions. [2023-11-26 10:49:58,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-11-26 10:49:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 338 states have (on average 1.4733727810650887) internal successors, (498), 337 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 498 transitions. [2023-11-26 10:49:58,877 INFO L240 hiAutomatonCegarLoop]: Abstraction has 338 states and 498 transitions. [2023-11-26 10:49:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:58,880 INFO L428 stractBuchiCegarLoop]: Abstraction has 338 states and 498 transitions. [2023-11-26 10:49:58,881 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-26 10:49:58,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 338 states and 498 transitions. [2023-11-26 10:49:58,884 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 336 [2023-11-26 10:49:58,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:49:58,885 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:49:58,885 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:49:58,885 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:58,886 INFO L748 eck$LassoCheckResult]: Stem: 1054#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 1030#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_~cond~0#1; 1031#L113-1 [2023-11-26 10:49:58,886 INFO L750 eck$LassoCheckResult]: Loop: 1031#L113-1 assume !false;havoc main_#t~nondet11#1;main_~cond~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1; 1076#L34 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; 1077#L53 assume !(0 != main_~p1~0#1); 1130#L53-2 assume !(0 != main_~p2~0#1); 1127#L57-1 assume !(0 != main_~p3~0#1); 1124#L61-1 assume !(0 != main_~p4~0#1); 1122#L65-1 assume !(0 != main_~p5~0#1); 1120#L69-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1117#L73-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1113#L77-1 assume !(0 != main_~p1~0#1); 1109#L83-1 assume !(0 != main_~p2~0#1); 1107#L88-1 assume !(0 != main_~p3~0#1); 1103#L93-1 assume !(0 != main_~p4~0#1); 1100#L98-1 assume !(0 != main_~p5~0#1); 1101#L103-1 assume !(0 != main_~p6~0#1); 1096#L108-1 assume !(0 != main_~p7~0#1); 1031#L113-1 [2023-11-26 10:49:58,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,887 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2023-11-26 10:49:58,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13697434] [2023-11-26 10:49:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:58,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:58,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash 937627012, now seen corresponding path program 1 times [2023-11-26 10:49:58,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113633462] [2023-11-26 10:49:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:58,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113633462] [2023-11-26 10:49:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113633462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:58,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:58,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688863891] [2023-11-26 10:49:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:58,964 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:49:58,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:58,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:58,966 INFO L87 Difference]: Start difference. First operand 338 states and 498 transitions. cyclomatic complexity: 176 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:59,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:59,010 INFO L93 Difference]: Finished difference Result 658 states and 946 transitions. [2023-11-26 10:49:59,010 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 658 states and 946 transitions. [2023-11-26 10:49:59,018 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 656 [2023-11-26 10:49:59,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 658 states to 658 states and 946 transitions. [2023-11-26 10:49:59,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 658 [2023-11-26 10:49:59,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 658 [2023-11-26 10:49:59,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 658 states and 946 transitions. [2023-11-26 10:49:59,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:59,036 INFO L218 hiAutomatonCegarLoop]: Abstraction has 658 states and 946 transitions. [2023-11-26 10:49:59,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states and 946 transitions. [2023-11-26 10:49:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2023-11-26 10:49:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 658 states have (on average 1.4376899696048633) internal successors, (946), 657 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 946 transitions. [2023-11-26 10:49:59,108 INFO L240 hiAutomatonCegarLoop]: Abstraction has 658 states and 946 transitions. [2023-11-26 10:49:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:59,110 INFO L428 stractBuchiCegarLoop]: Abstraction has 658 states and 946 transitions. [2023-11-26 10:49:59,110 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-26 10:49:59,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 658 states and 946 transitions. [2023-11-26 10:49:59,115 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 656 [2023-11-26 10:49:59,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:49:59,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:49:59,116 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:49:59,116 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:59,116 INFO L748 eck$LassoCheckResult]: Stem: 2062#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 2032#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_~cond~0#1; 2033#L113-1 [2023-11-26 10:49:59,116 INFO L750 eck$LassoCheckResult]: Loop: 2033#L113-1 assume !false;havoc main_#t~nondet11#1;main_~cond~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1; 2204#L34 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; 2184#L53 assume !(0 != main_~p1~0#1); 2177#L53-2 assume !(0 != main_~p2~0#1); 2179#L57-1 assume !(0 != main_~p3~0#1); 2355#L61-1 assume !(0 != main_~p4~0#1); 2351#L65-1 assume !(0 != main_~p5~0#1); 2348#L69-1 assume !(0 != main_~p6~0#1); 2346#L73-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2344#L77-1 assume !(0 != main_~p1~0#1); 2342#L83-1 assume !(0 != main_~p2~0#1); 2340#L88-1 assume !(0 != main_~p3~0#1); 2337#L93-1 assume !(0 != main_~p4~0#1); 2336#L98-1 assume !(0 != main_~p5~0#1); 2333#L103-1 assume !(0 != main_~p6~0#1); 2334#L108-1 assume !(0 != main_~p7~0#1); 2033#L113-1 [2023-11-26 10:49:59,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2023-11-26 10:49:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:59,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689192867] [2023-11-26 10:49:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:59,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,123 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:59,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:59,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1617685382, now seen corresponding path program 1 times [2023-11-26 10:49:59,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:59,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159087965] [2023-11-26 10:49:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:59,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:59,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:59,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:59,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159087965] [2023-11-26 10:49:59,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159087965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:59,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:59,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:59,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258710622] [2023-11-26 10:49:59,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:59,176 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:49:59,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:59,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:59,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:59,180 INFO L87 Difference]: Start difference. First operand 658 states and 946 transitions. cyclomatic complexity: 320 Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:59,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:59,210 INFO L93 Difference]: Finished difference Result 1282 states and 1794 transitions. [2023-11-26 10:49:59,210 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1282 states and 1794 transitions. [2023-11-26 10:49:59,224 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1280 [2023-11-26 10:49:59,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1282 states to 1282 states and 1794 transitions. [2023-11-26 10:49:59,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1282 [2023-11-26 10:49:59,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1282 [2023-11-26 10:49:59,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1282 states and 1794 transitions. [2023-11-26 10:49:59,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:49:59,239 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1282 states and 1794 transitions. [2023-11-26 10:49:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states and 1794 transitions. [2023-11-26 10:49:59,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1282. [2023-11-26 10:49:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1282 states have (on average 1.3993759750390016) internal successors, (1794), 1281 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1794 transitions. [2023-11-26 10:49:59,285 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1282 states and 1794 transitions. [2023-11-26 10:49:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:59,287 INFO L428 stractBuchiCegarLoop]: Abstraction has 1282 states and 1794 transitions. [2023-11-26 10:49:59,287 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-26 10:49:59,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1282 states and 1794 transitions. [2023-11-26 10:49:59,297 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1280 [2023-11-26 10:49:59,297 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:49:59,297 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:49:59,298 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:49:59,298 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:59,298 INFO L748 eck$LassoCheckResult]: Stem: 4013#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 3978#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_~cond~0#1; 3979#L113-1 [2023-11-26 10:49:59,298 INFO L750 eck$LassoCheckResult]: Loop: 3979#L113-1 assume !false;havoc main_#t~nondet11#1;main_~cond~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1; 4219#L34 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; 4217#L53 assume !(0 != main_~p1~0#1); 4212#L53-2 assume !(0 != main_~p2~0#1); 4206#L57-1 assume !(0 != main_~p3~0#1); 4201#L61-1 assume !(0 != main_~p4~0#1); 4202#L65-1 assume !(0 != main_~p5~0#1); 4249#L69-1 assume !(0 != main_~p6~0#1); 4247#L73-1 assume !(0 != main_~p7~0#1); 4243#L77-1 assume !(0 != main_~p1~0#1); 4235#L83-1 assume !(0 != main_~p2~0#1); 4234#L88-1 assume !(0 != main_~p3~0#1); 4081#L93-1 assume !(0 != main_~p4~0#1); 4082#L98-1 assume !(0 != main_~p5~0#1); 4226#L103-1 assume !(0 != main_~p6~0#1); 4223#L108-1 assume !(0 != main_~p7~0#1); 3979#L113-1 [2023-11-26 10:49:59,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2023-11-26 10:49:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:59,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67947393] [2023-11-26 10:49:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:59,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,305 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:59,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:59,311 INFO L85 PathProgramCache]: Analyzing trace with hash 808338756, now seen corresponding path program 1 times [2023-11-26 10:49:59,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:59,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649915595] [2023-11-26 10:49:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:59,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,317 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,324 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:59,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:59,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1317176582, now seen corresponding path program 1 times [2023-11-26 10:49:59,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:59,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052079958] [2023-11-26 10:49:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:59,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:49:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:49:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:49:59,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 10:49:59 BoogieIcfgContainer [2023-11-26 10:49:59,728 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 10:49:59,729 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:49:59,729 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:49:59,734 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:49:59,735 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:57" (3/4) ... [2023-11-26 10:49:59,736 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-26 10:49:59,800 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:49:59,806 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:49:59,807 INFO L158 Benchmark]: Toolchain (without parser) took 2755.30ms. Allocated memory is still 153.1MB. Free memory was 109.5MB in the beginning and 61.7MB in the end (delta: 47.8MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2023-11-26 10:49:59,807 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 62.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:49:59,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.08ms. Allocated memory is still 153.1MB. Free memory was 109.5MB in the beginning and 98.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:49:59,808 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.90ms. Allocated memory is still 153.1MB. Free memory was 98.8MB in the beginning and 97.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:49:59,808 INFO L158 Benchmark]: Boogie Preprocessor took 48.59ms. Allocated memory is still 153.1MB. Free memory was 97.2MB in the beginning and 95.6MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:49:59,809 INFO L158 Benchmark]: RCFGBuilder took 394.16ms. Allocated memory is still 153.1MB. Free memory was 95.2MB in the beginning and 84.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:49:59,809 INFO L158 Benchmark]: BuchiAutomizer took 1887.70ms. Allocated memory is still 153.1MB. Free memory was 84.1MB in the beginning and 63.8MB in the end (delta: 20.2MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2023-11-26 10:49:59,810 INFO L158 Benchmark]: Witness Printer took 78.06ms. Allocated memory is still 153.1MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:49:59,812 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 62.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.08ms. Allocated memory is still 153.1MB. Free memory was 109.5MB in the beginning and 98.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.90ms. Allocated memory is still 153.1MB. Free memory was 98.8MB in the beginning and 97.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.59ms. Allocated memory is still 153.1MB. Free memory was 97.2MB in the beginning and 95.6MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 394.16ms. Allocated memory is still 153.1MB. Free memory was 95.2MB in the beginning and 84.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1887.70ms. Allocated memory is still 153.1MB. Free memory was 84.1MB in the beginning and 63.8MB in the end (delta: 20.2MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * Witness Printer took 78.06ms. Allocated memory is still 153.1MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (6 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.6 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 1282 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 7 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 0. Minimization of det autom 6. Minimization of nondet autom 0. Automata minimization 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 556 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 207 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 349 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI6 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: 32]: 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; [L30] int cond; Loop: [L32] COND TRUE 1 [L33] cond = __VERIFIER_nondet_int() [L34] COND FALSE !(cond == 0) [L37] lk1 = 0 [L39] lk2 = 0 [L41] lk3 = 0 [L43] lk4 = 0 [L45] lk5 = 0 [L47] lk6 = 0 [L49] lk7 = 0 [L53] COND FALSE !(p1 != 0) [L57] COND FALSE !(p2 != 0) [L61] COND FALSE !(p3 != 0) [L65] COND FALSE !(p4 != 0) [L69] COND FALSE !(p5 != 0) [L73] COND FALSE !(p6 != 0) [L77] COND FALSE !(p7 != 0) [L83] COND FALSE !(p1 != 0) [L88] COND FALSE !(p2 != 0) [L93] COND FALSE !(p3 != 0) [L98] COND FALSE !(p4 != 0) [L103] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L113] COND FALSE !(p7 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 32]: 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; [L30] int cond; Loop: [L32] COND TRUE 1 [L33] cond = __VERIFIER_nondet_int() [L34] COND FALSE !(cond == 0) [L37] lk1 = 0 [L39] lk2 = 0 [L41] lk3 = 0 [L43] lk4 = 0 [L45] lk5 = 0 [L47] lk6 = 0 [L49] lk7 = 0 [L53] COND FALSE !(p1 != 0) [L57] COND FALSE !(p2 != 0) [L61] COND FALSE !(p3 != 0) [L65] COND FALSE !(p4 != 0) [L69] COND FALSE !(p5 != 0) [L73] COND FALSE !(p6 != 0) [L77] COND FALSE !(p7 != 0) [L83] COND FALSE !(p1 != 0) [L88] COND FALSE !(p2 != 0) [L93] COND FALSE !(p3 != 0) [L98] COND FALSE !(p4 != 0) [L103] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L113] COND FALSE !(p7 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-26 10:49:59,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35cfd0fb-5e0b-474f-b87f-4b1cd2e39bb9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)