./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC --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 404aca328acb019974a4013e1ced341d9a60ed0a822c21407be3158ee94f2c2d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:24:44,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:24:44,786 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:24:44,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:24:44,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:24:44,818 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:24:44,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:24:44,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:24:44,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:24:44,819 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:24:44,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:24:44,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:24:44,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:24:44,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:24:44,820 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:24:44,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:24:44,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:24:44,820 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:24:44,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:24:44,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:24:44,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:24:44,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:24:44,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:24:44,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:24:44,821 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:24:44,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:24:44,821 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:24:44,821 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:24:44,821 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:24:44,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:24:44,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:24:44,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:24:44,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:24:44,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:24:44,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:24:44,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:24:44,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:24:44,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:24:44,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:24:44,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:24:44,823 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:24:44,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:24:44,823 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:24:44,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:24:44,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:24:44,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:24:44,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:24:44,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:24:44,824 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC 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 -> 404aca328acb019974a4013e1ced341d9a60ed0a822c21407be3158ee94f2c2d [2024-11-23 18:24:45,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:24:45,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:24:45,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:24:45,117 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:24:45,117 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:24:45,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2024-11-23 18:24:48,061 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/data/ad3b9966e/11b4f7019dca405e8c9cb4d793ca2ffa/FLAG0271379ac [2024-11-23 18:24:48,364 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:24:48,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c [2024-11-23 18:24:48,385 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/data/ad3b9966e/11b4f7019dca405e8c9cb4d793ca2ffa/FLAG0271379ac [2024-11-23 18:24:48,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/data/ad3b9966e/11b4f7019dca405e8c9cb4d793ca2ffa [2024-11-23 18:24:48,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:24:48,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:24:48,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:24:48,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:24:48,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:24:48,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d593a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48, skipping insertion in model container [2024-11-23 18:24:48,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,478 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:24:48,642 WARN L250 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_0175f7bb-580c-482c-972e-2e4161523a29/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c[333,346] [2024-11-23 18:24:48,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:24:48,682 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:24:48,692 WARN L250 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_0175f7bb-580c-482c-972e-2e4161523a29/sv-benchmarks/c/array-programs/partial_mod_count_limited_gen.c[333,346] [2024-11-23 18:24:48,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:24:48,729 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:24:48,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48 WrapperNode [2024-11-23 18:24:48,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:24:48,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:24:48,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:24:48,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:24:48,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,762 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-23 18:24:48,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:24:48,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:24:48,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:24:48,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:24:48,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,774 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,784 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-23 18:24:48,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,790 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:24:48,802 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:24:48,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:24:48,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:24:48,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (1/1) ... [2024-11-23 18:24:48,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:24:48,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:48,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:24:48,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:24:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:24:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:24:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:24:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:24:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:24:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 18:24:48,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 18:24:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 18:24:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:24:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:24:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 18:24:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 18:24:48,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 18:24:48,954 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:24:48,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:24:49,134 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-23 18:24:49,134 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:24:49,143 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:24:49,143 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:24:49,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:24:49 BoogieIcfgContainer [2024-11-23 18:24:49,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:24:49,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:24:49,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:24:49,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:24:49,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:24:48" (1/3) ... [2024-11-23 18:24:49,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d57ae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:24:49, skipping insertion in model container [2024-11-23 18:24:49,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:48" (2/3) ... [2024-11-23 18:24:49,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d57ae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:24:49, skipping insertion in model container [2024-11-23 18:24:49,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:24:49" (3/3) ... [2024-11-23 18:24:49,154 INFO L128 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_gen.c [2024-11-23 18:24:49,170 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:24:49,172 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG partial_mod_count_limited_gen.c that has 2 procedures, 28 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-23 18:24:49,222 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:24:49,237 INFO L333 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, 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;@4072de67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:24:49,238 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:24:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-23 18:24:49,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:49,253 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:49,254 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:49,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:49,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1447366918, now seen corresponding path program 1 times [2024-11-23 18:24:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:49,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671538926] [2024-11-23 18:24:49,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:24:49,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671538926] [2024-11-23 18:24:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671538926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:49,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881343089] [2024-11-23 18:24:49,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:49,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:49,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:49,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:49,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:24:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:49,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:24:49,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:24:49,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:49,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881343089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:49,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:49,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:24:49,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986418496] [2024-11-23 18:24:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:49,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:24:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:49,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:24:49,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:24:49,632 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:49,649 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2024-11-23 18:24:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:24:49,651 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-23 18:24:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:49,657 INFO L225 Difference]: With dead ends: 53 [2024-11-23 18:24:49,657 INFO L226 Difference]: Without dead ends: 24 [2024-11-23 18:24:49,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:24:49,663 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:49,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:49,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-23 18:24:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-23 18:24:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-23 18:24:49,699 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 21 [2024-11-23 18:24:49,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:49,699 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-23 18:24:49,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-23 18:24:49,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-23 18:24:49,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:49,701 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:49,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:24:49,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:24:49,902 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:49,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1517417914, now seen corresponding path program 1 times [2024-11-23 18:24:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:49,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868050704] [2024-11-23 18:24:49,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:49,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:50,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868050704] [2024-11-23 18:24:50,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868050704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:50,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:50,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:24:50,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381561658] [2024-11-23 18:24:50,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:50,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:50,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:50,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:50,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:24:50,163 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:24:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:50,279 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2024-11-23 18:24:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:24:50,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-23 18:24:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:50,282 INFO L225 Difference]: With dead ends: 53 [2024-11-23 18:24:50,282 INFO L226 Difference]: Without dead ends: 38 [2024-11-23 18:24:50,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:24:50,284 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 39 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:50,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 26 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:50,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-23 18:24:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2024-11-23 18:24:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-23 18:24:50,291 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 21 [2024-11-23 18:24:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:50,292 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-23 18:24:50,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:24:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-23 18:24:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-23 18:24:50,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:50,294 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:50,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:24:50,295 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:50,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash -677613116, now seen corresponding path program 1 times [2024-11-23 18:24:50,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:50,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803462833] [2024-11-23 18:24:50,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:50,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:50,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:50,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803462833] [2024-11-23 18:24:50,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803462833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:50,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:50,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:24:50,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440181245] [2024-11-23 18:24:50,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:50,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:24:50,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:50,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:24:50,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:50,674 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:24:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:50,751 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2024-11-23 18:24:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:50,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-23 18:24:50,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:50,754 INFO L225 Difference]: With dead ends: 53 [2024-11-23 18:24:50,754 INFO L226 Difference]: Without dead ends: 38 [2024-11-23 18:24:50,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:50,755 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:50,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 48 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:50,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-23 18:24:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2024-11-23 18:24:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-23 18:24:50,766 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 27 [2024-11-23 18:24:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:50,766 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-23 18:24:50,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:24:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-23 18:24:50,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-23 18:24:50,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:50,767 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:50,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:24:50,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:50,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1070640126, now seen corresponding path program 1 times [2024-11-23 18:24:50,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:50,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44611494] [2024-11-23 18:24:50,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:50,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:50,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:50,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44611494] [2024-11-23 18:24:50,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44611494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:50,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045351270] [2024-11-23 18:24:50,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:50,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:50,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:50,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:50,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:24:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:51,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:24:51,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:51,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:24:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:51,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045351270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:24:51,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:24:51,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2024-11-23 18:24:51,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219742935] [2024-11-23 18:24:51,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:24:51,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:24:51,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:51,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:24:51,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:24:51,255 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 18:24:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:52,020 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2024-11-23 18:24:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:24:52,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2024-11-23 18:24:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:52,022 INFO L225 Difference]: With dead ends: 77 [2024-11-23 18:24:52,022 INFO L226 Difference]: Without dead ends: 68 [2024-11-23 18:24:52,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:24:52,023 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 136 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:52,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 46 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:24:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-23 18:24:52,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 43. [2024-11-23 18:24:52,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2024-11-23 18:24:52,031 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 27 [2024-11-23 18:24:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:52,032 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2024-11-23 18:24:52,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 18:24:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2024-11-23 18:24:52,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-23 18:24:52,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:52,033 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:52,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 18:24:52,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:52,238 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:52,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:52,238 INFO L85 PathProgramCache]: Analyzing trace with hash -517330202, now seen corresponding path program 1 times [2024-11-23 18:24:52,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:52,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561880122] [2024-11-23 18:24:52,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:52,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:52,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:52,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561880122] [2024-11-23 18:24:52,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561880122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:52,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220756748] [2024-11-23 18:24:52,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:52,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:52,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:52,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:52,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:24:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:52,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:24:52,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:53,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:24:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:53,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220756748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:24:53,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:24:53,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-11-23 18:24:53,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841090332] [2024-11-23 18:24:53,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:24:53,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 18:24:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:53,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 18:24:53,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-23 18:24:53,246 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 18:24:55,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:24:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:55,547 INFO L93 Difference]: Finished difference Result 161 states and 198 transitions. [2024-11-23 18:24:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 18:24:55,551 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 45 [2024-11-23 18:24:55,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:55,552 INFO L225 Difference]: With dead ends: 161 [2024-11-23 18:24:55,553 INFO L226 Difference]: Without dead ends: 152 [2024-11-23 18:24:55,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-23 18:24:55,554 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 515 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:55,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 92 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 18:24:55,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-23 18:24:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 79. [2024-11-23 18:24:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2024-11-23 18:24:55,577 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 45 [2024-11-23 18:24:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:55,577 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2024-11-23 18:24:55,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 18:24:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2024-11-23 18:24:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-23 18:24:55,579 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:55,579 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:55,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 18:24:55,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:55,780 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:55,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:55,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1990539858, now seen corresponding path program 2 times [2024-11-23 18:24:55,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:55,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348552052] [2024-11-23 18:24:55,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:24:55,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:55,839 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:24:55,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:24:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-11-23 18:24:56,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:56,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348552052] [2024-11-23 18:24:56,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348552052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:56,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:56,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:24:56,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158869430] [2024-11-23 18:24:56,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:56,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:56,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:56,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:56,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:24:56,015 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:24:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:56,047 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2024-11-23 18:24:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:24:56,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2024-11-23 18:24:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:56,050 INFO L225 Difference]: With dead ends: 87 [2024-11-23 18:24:56,053 INFO L226 Difference]: Without dead ends: 85 [2024-11-23 18:24:56,053 INFO L434 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 [2024-11-23 18:24:56,054 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:56,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 63 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-23 18:24:56,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-23 18:24:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.271604938271605) internal successors, (103), 81 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2024-11-23 18:24:56,079 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 81 [2024-11-23 18:24:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:56,079 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2024-11-23 18:24:56,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:24:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2024-11-23 18:24:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-23 18:24:56,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:56,085 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:56,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:24:56,085 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:56,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1990599440, now seen corresponding path program 1 times [2024-11-23 18:24:56,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:56,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697471654] [2024-11-23 18:24:56,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:56,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:57,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:57,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697471654] [2024-11-23 18:24:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697471654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:57,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871553841] [2024-11-23 18:24:57,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:57,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:57,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:57,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:57,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:24:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:57,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 18:24:57,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:57,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:24:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:24:58,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871553841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:24:58,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:24:58,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 37 [2024-11-23 18:24:58,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027956327] [2024-11-23 18:24:58,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:24:58,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-23 18:24:58,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:58,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-23 18:24:58,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 18:24:58,149 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 18:24:59,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:59,807 INFO L93 Difference]: Finished difference Result 465 states and 566 transitions. [2024-11-23 18:24:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 18:24:59,808 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2024-11-23 18:24:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:59,811 INFO L225 Difference]: With dead ends: 465 [2024-11-23 18:24:59,811 INFO L226 Difference]: Without dead ends: 450 [2024-11-23 18:24:59,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 18:24:59,814 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 1261 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:59,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 206 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 18:24:59,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-23 18:24:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 157. [2024-11-23 18:24:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 153 states have (on average 1.3006535947712419) internal successors, (199), 153 states have internal predecessors, (199), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:24:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 203 transitions. [2024-11-23 18:24:59,832 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 203 transitions. Word has length 81 [2024-11-23 18:24:59,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:59,833 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 203 transitions. [2024-11-23 18:24:59,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 18:24:59,833 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 203 transitions. [2024-11-23 18:24:59,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-23 18:24:59,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:59,834 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:59,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 18:25:00,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:25:00,035 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:00,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash -866793856, now seen corresponding path program 2 times [2024-11-23 18:25:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:00,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463461168] [2024-11-23 18:25:00,036 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:25:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:00,259 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:25:00,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:25:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:25:02,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463461168] [2024-11-23 18:25:02,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463461168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:25:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892177982] [2024-11-23 18:25:02,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:25:02,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:25:02,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:25:02,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:25:02,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:25:02,765 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:25:02,765 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:25:02,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 18:25:02,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:25:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:25:03,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:25:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:25:05,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892177982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:25:05,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:25:05,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 73 [2024-11-23 18:25:05,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287650579] [2024-11-23 18:25:05,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:25:05,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-23 18:25:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:05,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-23 18:25:05,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=2949, Unknown=0, NotChecked=0, Total=5256 [2024-11-23 18:25:05,284 INFO L87 Difference]: Start difference. First operand 157 states and 203 transitions. Second operand has 73 states, 73 states have (on average 5.739726027397261) internal successors, (419), 73 states have internal predecessors, (419), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 18:25:09,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:25:10,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:10,328 INFO L93 Difference]: Finished difference Result 945 states and 1154 transitions. [2024-11-23 18:25:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-23 18:25:10,329 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.739726027397261) internal successors, (419), 73 states have internal predecessors, (419), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 153 [2024-11-23 18:25:10,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:10,334 INFO L225 Difference]: With dead ends: 945 [2024-11-23 18:25:10,334 INFO L226 Difference]: Without dead ends: 930 [2024-11-23 18:25:10,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3480, Invalid=5640, Unknown=0, NotChecked=0, Total=9120 [2024-11-23 18:25:10,341 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 2328 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:10,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2328 Valid, 406 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 18:25:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-11-23 18:25:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 301. [2024-11-23 18:25:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 297 states have (on average 1.3164983164983164) internal successors, (391), 297 states have internal predecessors, (391), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 18:25:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 395 transitions. [2024-11-23 18:25:10,398 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 395 transitions. Word has length 153 [2024-11-23 18:25:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:10,400 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 395 transitions. [2024-11-23 18:25:10,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.739726027397261) internal successors, (419), 73 states have internal predecessors, (419), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 18:25:10,400 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 395 transitions. [2024-11-23 18:25:10,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-23 18:25:10,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:10,409 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:25:10,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 18:25:10,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:25:10,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:10,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash -441423456, now seen corresponding path program 3 times [2024-11-23 18:25:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:10,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934054578] [2024-11-23 18:25:10,611 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 18:25:10,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:10,947 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-23 18:25:10,947 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:25:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6260 backedges. 404 proven. 3 refuted. 0 times theorem prover too weak. 5853 trivial. 0 not checked. [2024-11-23 18:25:11,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:11,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934054578] [2024-11-23 18:25:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934054578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:25:11,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498406813] [2024-11-23 18:25:11,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 18:25:11,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:25:11,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:25:11,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:25:11,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0175f7bb-580c-482c-972e-2e4161523a29/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process