./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:02:07,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:02:07,648 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 22:02:07,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:02:07,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:02:07,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:02:07,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:02:07,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:02:07,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:02:07,689 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:02:07,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:02:07,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:02:07,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:02:07,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:02:07,694 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:02:07,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:02:07,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:02:07,695 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:02:07,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:02:07,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:02:07,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:02:07,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:02:07,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:02:07,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:02:07,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:02:07,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:02:07,699 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:02:07,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:02:07,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:02:07,701 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:02:07,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:02:07,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:07,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:02:07,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:02:07,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:02:07,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:02:07,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:02:07,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:02:07,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:02:07,706 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:02:07,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:02:07,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:02:07,707 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 [2023-11-24 22:02:08,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:02:08,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:02:08,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:02:08,045 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:02:08,046 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:02:08,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2023-11-24 22:02:11,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:02:11,611 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:02:11,613 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2023-11-24 22:02:11,633 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/data/4e8114eed/9d6ba051abda454fba87b15a9524180c/FLAG99b11c631 [2023-11-24 22:02:11,650 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/data/4e8114eed/9d6ba051abda454fba87b15a9524180c [2023-11-24 22:02:11,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:02:11,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:02:11,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:11,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:02:11,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:02:11,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:11" (1/1) ... [2023-11-24 22:02:11,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3524d03b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:11, skipping insertion in model container [2023-11-24 22:02:11,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:11" (1/1) ... [2023-11-24 22:02:11,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:02:12,109 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2023-11-24 22:02:12,115 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2023-11-24 22:02:12,116 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2023-11-24 22:02:12,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:12,140 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:02:12,216 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2023-11-24 22:02:12,217 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2023-11-24 22:02:12,219 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2023-11-24 22:02:12,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:12,304 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:02:12,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12 WrapperNode [2023-11-24 22:02:12,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:12,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:12,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:02:12,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:02:12,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,395 INFO L138 Inliner]: procedures = 142, calls = 62, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 184 [2023-11-24 22:02:12,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:12,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:02:12,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:02:12,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:02:12,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,428 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,481 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 7 writes are split as follows [0, 7]. [2023-11-24 22:02:12,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:02:12,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:02:12,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:02:12,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:02:12,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (1/1) ... [2023-11-24 22:02:12,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:12,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:02:12,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:02:12,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:02:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-24 22:02:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-24 22:02:12,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-11-24 22:02:12,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-11-24 22:02:12,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:02:12,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:02:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 22:02:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 22:02:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-11-24 22:02:12,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-11-24 22:02:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 22:02:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 22:02:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:02:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 22:02:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 22:02:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:02:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:02:12,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-11-24 22:02:12,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-11-24 22:02:12,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:02:12,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:02:12,818 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:02:12,820 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:02:13,162 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:02:13,313 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:02:13,319 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-24 22:02:13,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:13 BoogieIcfgContainer [2023-11-24 22:02:13,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:02:13,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:02:13,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:02:13,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:02:13,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:02:11" (1/3) ... [2023-11-24 22:02:13,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30949c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:13, skipping insertion in model container [2023-11-24 22:02:13,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:12" (2/3) ... [2023-11-24 22:02:13,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30949c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:13, skipping insertion in model container [2023-11-24 22:02:13,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:13" (3/3) ... [2023-11-24 22:02:13,335 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2023-11-24 22:02:13,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:02:13,360 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-24 22:02:13,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:02:13,413 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38a44b28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:02:13,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 22:02:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 40 states have (on average 1.5) internal successors, (60), 43 states have internal predecessors, (60), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 22:02:13,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 22:02:13,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:13,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:13,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:13,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash 16347161, now seen corresponding path program 1 times [2023-11-24 22:02:13,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:13,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655828485] [2023-11-24 22:02:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:13,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:13,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:13,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655828485] [2023-11-24 22:02:13,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655828485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:13,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:13,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:02:13,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080394997] [2023-11-24 22:02:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:13,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:02:13,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:13,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:02:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:02:13,668 INFO L87 Difference]: Start difference. First operand has 56 states, 40 states have (on average 1.5) internal successors, (60), 43 states have internal predecessors, (60), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:02:13,765 INFO L93 Difference]: Finished difference Result 111 states and 156 transitions. [2023-11-24 22:02:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:02:13,768 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-24 22:02:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:02:13,777 INFO L225 Difference]: With dead ends: 111 [2023-11-24 22:02:13,778 INFO L226 Difference]: Without dead ends: 54 [2023-11-24 22:02:13,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:02:13,786 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:02:13,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:02:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-24 22:02:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-24 22:02:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 22:02:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2023-11-24 22:02:13,839 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 9 [2023-11-24 22:02:13,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:02:13,840 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2023-11-24 22:02:13,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,841 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2023-11-24 22:02:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 22:02:13,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:13,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:13,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:02:13,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:13,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1510923330, now seen corresponding path program 1 times [2023-11-24 22:02:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:13,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52905365] [2023-11-24 22:02:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:13,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:14,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52905365] [2023-11-24 22:02:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52905365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:14,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:14,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:02:14,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938675822] [2023-11-24 22:02:14,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:14,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:02:14,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:14,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:02:14,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:02:14,148 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:02:14,341 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2023-11-24 22:02:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:02:14,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-24 22:02:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:02:14,347 INFO L225 Difference]: With dead ends: 101 [2023-11-24 22:02:14,348 INFO L226 Difference]: Without dead ends: 97 [2023-11-24 22:02:14,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:02:14,350 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:02:14,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 127 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:02:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-24 22:02:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2023-11-24 22:02:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 64 states have internal predecessors, (81), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-24 22:02:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2023-11-24 22:02:14,413 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 9 [2023-11-24 22:02:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:02:14,413 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2023-11-24 22:02:14,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:14,414 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2023-11-24 22:02:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 22:02:14,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:14,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:14,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:02:14,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:14,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1591337207, now seen corresponding path program 1 times [2023-11-24 22:02:14,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:14,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362989391] [2023-11-24 22:02:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:14,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-24 22:02:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362989391] [2023-11-24 22:02:14,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362989391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:14,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:02:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046183094] [2023-11-24 22:02:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:14,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:02:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:14,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:02:14,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:02:14,610 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 22:02:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:02:14,804 INFO L93 Difference]: Finished difference Result 141 states and 174 transitions. [2023-11-24 22:02:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:02:14,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-24 22:02:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:02:14,807 INFO L225 Difference]: With dead ends: 141 [2023-11-24 22:02:14,807 INFO L226 Difference]: Without dead ends: 65 [2023-11-24 22:02:14,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:02:14,812 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:02:14,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 135 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:02:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-24 22:02:14,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2023-11-24 22:02:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 46 states have internal predecessors, (53), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 22:02:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-11-24 22:02:14,829 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 13 [2023-11-24 22:02:14,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:02:14,829 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-11-24 22:02:14,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 22:02:14,830 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-11-24 22:02:14,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 22:02:14,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:14,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:14,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:02:14,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:14,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1651958428, now seen corresponding path program 1 times [2023-11-24 22:02:14,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:14,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033069688] [2023-11-24 22:02:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:02:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-24 22:02:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:15,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 22:02:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:15,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033069688] [2023-11-24 22:02:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033069688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:15,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:15,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-24 22:02:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462918309] [2023-11-24 22:02:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:15,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 22:02:15,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:15,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 22:02:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-24 22:02:15,870 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 14 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 22:02:17,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:02:17,077 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2023-11-24 22:02:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-24 22:02:17,078 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2023-11-24 22:02:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:02:17,080 INFO L225 Difference]: With dead ends: 157 [2023-11-24 22:02:17,080 INFO L226 Difference]: Without dead ends: 135 [2023-11-24 22:02:17,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2023-11-24 22:02:17,082 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 239 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 22:02:17,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 288 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 22:02:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-24 22:02:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 92. [2023-11-24 22:02:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 73 states have internal predecessors, (88), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 22:02:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2023-11-24 22:02:17,101 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 24 [2023-11-24 22:02:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:02:17,102 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2023-11-24 22:02:17,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 22:02:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2023-11-24 22:02:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 22:02:17,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:17,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:17,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:02:17,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:17,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash -349519591, now seen corresponding path program 1 times [2023-11-24 22:02:17,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:17,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533507282] [2023-11-24 22:02:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:17,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:02:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:17,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-24 22:02:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 22:02:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:17,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-24 22:02:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:02:17,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533507282] [2023-11-24 22:02:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533507282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:17,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:17,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 22:02:17,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915006620] [2023-11-24 22:02:17,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:17,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:02:17,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:02:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:02:17,306 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 22:02:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:02:17,563 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions. [2023-11-24 22:02:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:02:17,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-11-24 22:02:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:02:17,567 INFO L225 Difference]: With dead ends: 102 [2023-11-24 22:02:17,567 INFO L226 Difference]: Without dead ends: 100 [2023-11-24 22:02:17,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-24 22:02:17,568 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:02:17,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 165 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:02:17,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-24 22:02:17,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-24 22:02:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 79 states have internal predecessors, (94), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2023-11-24 22:02:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2023-11-24 22:02:17,597 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 28 [2023-11-24 22:02:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:02:17,598 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2023-11-24 22:02:17,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 22:02:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2023-11-24 22:02:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 22:02:17,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:17,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:17,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:02:17,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:17,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:17,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1225083714, now seen corresponding path program 1 times [2023-11-24 22:02:17,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:17,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099979032] [2023-11-24 22:02:17,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:17,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:02:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-24 22:02:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:18,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 22:02:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:18,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-24 22:02:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:19,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:19,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099979032] [2023-11-24 22:02:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099979032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:02:19,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947822107] [2023-11-24 22:02:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:19,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:02:19,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:02:19,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:02:19,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 22:02:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:19,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-24 22:02:19,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:02:19,706 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 22:02:19,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 22:02:20,653 INFO L349 Elim1Store]: treesize reduction 13, result has 56.7 percent of original size [2023-11-24 22:02:20,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 87 [2023-11-24 22:02:20,678 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 22:02:20,705 INFO L349 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-11-24 22:02:20,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 101 [2023-11-24 22:02:20,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2023-11-24 22:02:20,784 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-24 22:02:20,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2023-11-24 22:02:20,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-24 22:02:20,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:02:20,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 13 [2023-11-24 22:02:20,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-24 22:02:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:21,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:02:22,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947822107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:02:22,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:02:22,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2023-11-24 22:02:22,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450642451] [2023-11-24 22:02:22,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:02:22,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-24 22:02:22,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-24 22:02:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=926, Unknown=10, NotChecked=0, Total=1056 [2023-11-24 22:02:22,050 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand has 30 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 23 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 22:02:27,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 22:02:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:02:29,989 INFO L93 Difference]: Finished difference Result 265 states and 346 transitions. [2023-11-24 22:02:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-24 22:02:29,990 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 23 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 28 [2023-11-24 22:02:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:02:29,993 INFO L225 Difference]: With dead ends: 265 [2023-11-24 22:02:29,993 INFO L226 Difference]: Without dead ends: 179 [2023-11-24 22:02:29,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=433, Invalid=2850, Unknown=23, NotChecked=0, Total=3306 [2023-11-24 22:02:29,996 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 229 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 87 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:02:29,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 441 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1085 Invalid, 14 Unknown, 0 Unchecked, 6.1s Time] [2023-11-24 22:02:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-24 22:02:30,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 142. [2023-11-24 22:02:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 108 states have (on average 1.2685185185185186) internal successors, (137), 112 states have internal predecessors, (137), 18 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (25), 19 states have call predecessors, (25), 18 states have call successors, (25) [2023-11-24 22:02:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2023-11-24 22:02:30,026 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 28 [2023-11-24 22:02:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:02:30,027 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2023-11-24 22:02:30,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 23 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 22:02:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2023-11-24 22:02:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-24 22:02:30,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:02:30,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:30,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 22:02:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0661a487-e14a-4e2c-a2b8-774abf05bee6/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:02:30,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:02:30,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash 708305632, now seen corresponding path program 2 times [2023-11-24 22:02:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260724247] [2023-11-24 22:02:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:30,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:31,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:02:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:31,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-24 22:02:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 22:02:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-24 22:02:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-24 22:02:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 22:02:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat