./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c4f91361 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 60035180ad93ee19bf4d992ab5c22fc9a9b898dcfe886a7e5b520105473a6903 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 14:46:16,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 14:46:16,748 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 14:46:16,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 14:46:16,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 14:46:16,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 14:46:16,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 14:46:16,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 14:46:16,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 14:46:16,789 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 14:46:16,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 14:46:16,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 14:46:16,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 14:46:16,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 14:46:16,795 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 14:46:16,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 14:46:16,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 14:46:16,796 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 14:46:16,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 14:46:16,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 14:46:16,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 14:46:16,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 14:46:16,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 14:46:16,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 14:46:16,799 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 14:46:16,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 14:46:16,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 14:46:16,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 14:46:16,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 14:46:16,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 14:46:16,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 14:46:16,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:46:16,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 14:46:16,803 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 14:46:16,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 14:46:16,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 14:46:16,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 14:46:16,804 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 14:46:16,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 14:46:16,804 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 14:46:16,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 14:46:16,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 14:46:16,805 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60035180ad93ee19bf4d992ab5c22fc9a9b898dcfe886a7e5b520105473a6903 [2023-11-23 14:46:17,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 14:46:17,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 14:46:17,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 14:46:17,071 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 14:46:17,072 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 14:46:17,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-11-23 14:46:18,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 14:46:18,487 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 14:46:18,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-11-23 14:46:18,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc848a022/56597ab99c4b4cf18e9c03a02f87c6cd/FLAG9a2226463 [2023-11-23 14:46:18,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc848a022/56597ab99c4b4cf18e9c03a02f87c6cd [2023-11-23 14:46:18,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 14:46:18,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 14:46:18,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 14:46:18,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 14:46:18,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 14:46:18,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4320fd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18, skipping insertion in model container [2023-11-23 14:46:18,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,565 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 14:46:18,726 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-11-23 14:46:18,743 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-11-23 14:46:18,746 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-11-23 14:46:18,749 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-11-23 14:46:18,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:46:18,764 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 14:46:18,777 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-11-23 14:46:18,780 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-11-23 14:46:18,783 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-11-23 14:46:18,785 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-11-23 14:46:18,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:46:18,799 INFO L206 MainTranslator]: Completed translation [2023-11-23 14:46:18,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18 WrapperNode [2023-11-23 14:46:18,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 14:46:18,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 14:46:18,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 14:46:18,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 14:46:18,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,836 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2023-11-23 14:46:18,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 14:46:18,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 14:46:18,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 14:46:18,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 14:46:18,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,867 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-11-23 14:46:18,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 14:46:18,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 14:46:18,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 14:46:18,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 14:46:18,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (1/1) ... [2023-11-23 14:46:18,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:46:18,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:18,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 14:46:18,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 14:46:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 14:46:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 14:46:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 14:46:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 14:46:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 14:46:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 14:46:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 14:46:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 14:46:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 14:46:18,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 14:46:18,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 14:46:19,091 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 14:46:19,094 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 14:46:19,379 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 14:46:19,408 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 14:46:19,409 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 14:46:19,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:19 BoogieIcfgContainer [2023-11-23 14:46:19,409 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 14:46:19,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 14:46:19,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 14:46:19,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 14:46:19,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:46:18" (1/3) ... [2023-11-23 14:46:19,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64411fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:19, skipping insertion in model container [2023-11-23 14:46:19,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:46:18" (2/3) ... [2023-11-23 14:46:19,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64411fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:46:19, skipping insertion in model container [2023-11-23 14:46:19,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:19" (3/3) ... [2023-11-23 14:46:19,417 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2023-11-23 14:46:19,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 14:46:19,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-23 14:46:19,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 14:46:19,480 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1bb7c354, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 14:46:19,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 14:46:19,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 32 states have (on average 1.71875) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 14:46:19,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:19,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:19,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 14:46:19,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash -622544545, now seen corresponding path program 1 times [2023-11-23 14:46:19,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:19,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279153640] [2023-11-23 14:46:19,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:19,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:46:19,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:19,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279153640] [2023-11-23 14:46:19,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279153640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:46:19,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:46:19,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 14:46:19,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045436078] [2023-11-23 14:46:19,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:19,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 14:46:19,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 14:46:19,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:46:19,880 INFO L87 Difference]: Start difference. First operand has 37 states, 32 states have (on average 1.71875) internal successors, (55), 36 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:19,946 INFO L93 Difference]: Finished difference Result 73 states and 109 transitions. [2023-11-23 14:46:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:46:19,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-23 14:46:19,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:19,955 INFO L225 Difference]: With dead ends: 73 [2023-11-23 14:46:19,956 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 14:46:19,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:46:19,964 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:19,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:19,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 14:46:19,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-23 14:46:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:19,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-11-23 14:46:20,000 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 10 [2023-11-23 14:46:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:20,001 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-11-23 14:46:20,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-11-23 14:46:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 14:46:20,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:20,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:20,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 14:46:20,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 14:46:20,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash -175439648, now seen corresponding path program 1 times [2023-11-23 14:46:20,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:20,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241451522] [2023-11-23 14:46:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:20,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:46:20,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:20,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241451522] [2023-11-23 14:46:20,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241451522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:20,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416449610] [2023-11-23 14:46:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:20,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:20,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:20,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:46:20,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 14:46:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:20,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 14:46:20,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:46:20,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:46:20,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416449610] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:20,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 14:46:20,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-11-23 14:46:20,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425692757] [2023-11-23 14:46:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:20,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 14:46:20,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:20,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 14:46:20,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 14:46:20,431 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:20,454 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2023-11-23 14:46:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:46:20,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 14:46:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:20,457 INFO L225 Difference]: With dead ends: 42 [2023-11-23 14:46:20,457 INFO L226 Difference]: Without dead ends: 32 [2023-11-23 14:46:20,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 14:46:20,459 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:20,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-23 14:46:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-23 14:46:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-11-23 14:46:20,469 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 11 [2023-11-23 14:46:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:20,469 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-11-23 14:46:20,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-11-23 14:46:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 14:46:20,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:20,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:20,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 14:46:20,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:20,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 14:46:20,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:20,685 INFO L85 PathProgramCache]: Analyzing trace with hash 913237942, now seen corresponding path program 1 times [2023-11-23 14:46:20,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:20,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951673153] [2023-11-23 14:46:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:20,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 14:46:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:20,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951673153] [2023-11-23 14:46:20,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951673153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:46:20,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:46:20,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 14:46:20,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18567497] [2023-11-23 14:46:20,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:20,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 14:46:20,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:20,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 14:46:20,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:46:20,744 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:20,775 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2023-11-23 14:46:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:46:20,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 14:46:20,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:20,776 INFO L225 Difference]: With dead ends: 58 [2023-11-23 14:46:20,776 INFO L226 Difference]: Without dead ends: 37 [2023-11-23 14:46:20,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:46:20,778 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:20,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 39 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:20,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-23 14:46:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2023-11-23 14:46:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-11-23 14:46:20,782 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 12 [2023-11-23 14:46:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:20,783 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-11-23 14:46:20,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-11-23 14:46:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 14:46:20,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:20,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:20,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 14:46:20,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 14:46:20,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash 843795121, now seen corresponding path program 1 times [2023-11-23 14:46:20,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:20,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597661709] [2023-11-23 14:46:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:20,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 14:46:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597661709] [2023-11-23 14:46:20,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597661709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:46:20,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:46:20,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 14:46:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001549687] [2023-11-23 14:46:20,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:20,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 14:46:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 14:46:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 14:46:20,837 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:20,870 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2023-11-23 14:46:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 14:46:20,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 14:46:20,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:20,871 INFO L225 Difference]: With dead ends: 51 [2023-11-23 14:46:20,871 INFO L226 Difference]: Without dead ends: 49 [2023-11-23 14:46:20,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 14:46:20,873 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:20,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 85 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:20,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-23 14:46:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2023-11-23 14:46:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2023-11-23 14:46:20,877 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2023-11-23 14:46:20,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:20,878 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2023-11-23 14:46:20,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2023-11-23 14:46:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 14:46:20,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:20,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:20,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 14:46:20,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 14:46:20,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:20,880 INFO L85 PathProgramCache]: Analyzing trace with hash 450760690, now seen corresponding path program 1 times [2023-11-23 14:46:20,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:20,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827869632] [2023-11-23 14:46:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:20,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 14:46:20,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:20,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827869632] [2023-11-23 14:46:20,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827869632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:46:20,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:46:20,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 14:46:20,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967098717] [2023-11-23 14:46:20,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:20,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 14:46:20,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:20,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 14:46:20,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:46:20,916 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:20,955 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-11-23 14:46:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:46:20,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-23 14:46:20,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:20,957 INFO L225 Difference]: With dead ends: 54 [2023-11-23 14:46:20,957 INFO L226 Difference]: Without dead ends: 33 [2023-11-23 14:46:20,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:46:20,960 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:20,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-23 14:46:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2023-11-23 14:46:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-11-23 14:46:20,969 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 13 [2023-11-23 14:46:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:20,969 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-11-23 14:46:20,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-11-23 14:46:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 14:46:20,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:20,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:20,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 14:46:20,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 14:46:20,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:20,972 INFO L85 PathProgramCache]: Analyzing trace with hash 657721553, now seen corresponding path program 1 times [2023-11-23 14:46:20,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:20,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596644994] [2023-11-23 14:46:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:20,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:46:21,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:21,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596644994] [2023-11-23 14:46:21,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596644994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:21,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073306655] [2023-11-23 14:46:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:21,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:21,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:21,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:46:21,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 14:46:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:21,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 14:46:21,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:46:21,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 14:46:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:46:21,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073306655] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 14:46:21,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 14:46:21,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-23 14:46:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360002870] [2023-11-23 14:46:21,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 14:46:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 14:46:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:21,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 14:46:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-23 14:46:21,262 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:21,294 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2023-11-23 14:46:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 14:46:21,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 14:46:21,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:21,297 INFO L225 Difference]: With dead ends: 54 [2023-11-23 14:46:21,297 INFO L226 Difference]: Without dead ends: 30 [2023-11-23 14:46:21,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-23 14:46:21,303 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:21,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:21,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-23 14:46:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-23 14:46:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-11-23 14:46:21,312 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2023-11-23 14:46:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:21,313 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-11-23 14:46:21,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-11-23 14:46:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 14:46:21,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:21,314 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:21,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 14:46:21,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 14:46:21,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 14:46:21,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:21,515 INFO L85 PathProgramCache]: Analyzing trace with hash -594382030, now seen corresponding path program 2 times [2023-11-23 14:46:21,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:21,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120866427] [2023-11-23 14:46:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:21,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:46:21,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120866427] [2023-11-23 14:46:21,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120866427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 14:46:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92180398] [2023-11-23 14:46:21,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 14:46:21,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:21,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:46:21,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:46:21,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 14:46:21,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 14:46:21,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 14:46:21,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 14:46:21,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:46:22,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:22,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:22,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:22,679 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 14:46:22,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:22,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:22,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 14:46:22,685 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 14:46:22,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:46:22,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 264 treesize of output 137 [2023-11-23 14:46:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 14:46:22,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:46:22,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92180398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:46:22,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 14:46:22,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2023-11-23 14:46:22,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781340929] [2023-11-23 14:46:22,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:22,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 14:46:22,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 14:46:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-23 14:46:22,842 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:23,033 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2023-11-23 14:46:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 14:46:23,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-23 14:46:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:23,034 INFO L225 Difference]: With dead ends: 46 [2023-11-23 14:46:23,034 INFO L226 Difference]: Without dead ends: 25 [2023-11-23 14:46:23,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-23 14:46:23,035 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:23,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 34 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 14:46:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-23 14:46:23,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-11-23 14:46:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-23 14:46:23,039 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2023-11-23 14:46:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:23,039 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-23 14:46:23,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-23 14:46:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 14:46:23,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:46:23,040 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:23,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 14:46:23,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:46:23,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 14:46:23,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:46:23,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1926424864, now seen corresponding path program 1 times [2023-11-23 14:46:23,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:46:23,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477684383] [2023-11-23 14:46:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:46:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:46:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:46:23,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 14:46:23,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:46:23,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477684383] [2023-11-23 14:46:23,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477684383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:46:23,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:46:23,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 14:46:23,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50168538] [2023-11-23 14:46:23,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:46:23,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 14:46:23,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:46:23,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 14:46:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 14:46:23,337 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:46:23,383 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2023-11-23 14:46:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 14:46:23,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-23 14:46:23,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:46:23,384 INFO L225 Difference]: With dead ends: 29 [2023-11-23 14:46:23,384 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 14:46:23,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 14:46:23,386 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:46:23,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 60 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:46:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 14:46:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 14:46:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 14:46:23,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2023-11-23 14:46:23,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:46:23,387 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 14:46:23,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 14:46:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 14:46:23,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 14:46:23,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-23 14:46:23,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-23 14:46:23,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-23 14:46:23,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-23 14:46:23,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 14:46:23,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 14:46:23,418 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2023-11-23 14:46:23,418 INFO L899 garLoopResultBuilder]: For program point L118(lines 30 189) no Hoare annotation was computed. [2023-11-23 14:46:23,418 INFO L899 garLoopResultBuilder]: For program point L52(lines 50 143) no Hoare annotation was computed. [2023-11-23 14:46:23,418 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-11-23 14:46:23,418 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 143) no Hoare annotation was computed. [2023-11-23 14:46:23,418 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 14 200) no Hoare annotation was computed. [2023-11-23 14:46:23,418 INFO L899 garLoopResultBuilder]: For program point $Ultimate##32(lines 104 131) no Hoare annotation was computed. [2023-11-23 14:46:23,419 INFO L899 garLoopResultBuilder]: For program point L69(lines 66 92) no Hoare annotation was computed. [2023-11-23 14:46:23,419 INFO L899 garLoopResultBuilder]: For program point L160(lines 160 188) no Hoare annotation was computed. [2023-11-23 14:46:23,419 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 137) no Hoare annotation was computed. [2023-11-23 14:46:23,419 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 194) no Hoare annotation was computed. [2023-11-23 14:46:23,419 INFO L895 garLoopResultBuilder]: At program point L20-3(lines 20 23) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0) (= (mod |ULTIMATE.start_main_~main__loop_entered~0#1| 4294967296) 0)) [2023-11-23 14:46:23,419 INFO L899 garLoopResultBuilder]: For program point L20-4(lines 20 23) no Hoare annotation was computed. [2023-11-23 14:46:23,419 INFO L899 garLoopResultBuilder]: For program point L111(lines 111 124) no Hoare annotation was computed. [2023-11-23 14:46:23,419 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 177) no Hoare annotation was computed. [2023-11-23 14:46:23,419 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 142) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 151) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 183) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point L129(lines 101 136) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 189) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 97) no Hoare annotation was computed. [2023-11-23 14:46:23,420 INFO L899 garLoopResultBuilder]: For program point L89(lines 64 97) no Hoare annotation was computed. [2023-11-23 14:46:23,421 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2023-11-23 14:46:23,421 INFO L899 garLoopResultBuilder]: For program point L148(lines 33 156) no Hoare annotation was computed. [2023-11-23 14:46:23,421 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 92) no Hoare annotation was computed. [2023-11-23 14:46:23,421 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 156) no Hoare annotation was computed. [2023-11-23 14:46:23,421 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 14:46:23,421 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 199) no Hoare annotation was computed. [2023-11-23 14:46:23,421 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 84) no Hoare annotation was computed. [2023-11-23 14:46:23,422 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2023-11-23 14:46:23,422 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 136) no Hoare annotation was computed. [2023-11-23 14:46:23,423 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 151) no Hoare annotation was computed. [2023-11-23 14:46:23,427 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-23 14:46:23,428 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 14:46:23,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:46:23 BoogieIcfgContainer [2023-11-23 14:46:23,440 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 14:46:23,441 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 14:46:23,441 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 14:46:23,441 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 14:46:23,441 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:46:19" (3/4) ... [2023-11-23 14:46:23,443 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 14:46:23,453 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-23 14:46:23,453 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 14:46:23,453 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 14:46:23,453 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 14:46:23,560 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-23 14:46:23,560 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-23 14:46:23,560 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 14:46:23,561 INFO L158 Benchmark]: Toolchain (without parser) took 5037.92ms. Allocated memory was 153.1MB in the beginning and 234.9MB in the end (delta: 81.8MB). Free memory was 122.4MB in the beginning and 126.8MB in the end (delta: -4.4MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2023-11-23 14:46:23,561 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 14:46:23,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.13ms. Allocated memory is still 153.1MB. Free memory was 122.2MB in the beginning and 109.4MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 14:46:23,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.33ms. Allocated memory is still 153.1MB. Free memory was 109.4MB in the beginning and 107.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 14:46:23,562 INFO L158 Benchmark]: Boogie Preprocessor took 47.73ms. Allocated memory is still 153.1MB. Free memory was 107.6MB in the beginning and 105.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 14:46:23,562 INFO L158 Benchmark]: RCFGBuilder took 523.39ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 89.3MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 14:46:23,563 INFO L158 Benchmark]: TraceAbstraction took 4029.33ms. Allocated memory was 153.1MB in the beginning and 234.9MB in the end (delta: 81.8MB). Free memory was 88.5MB in the beginning and 132.1MB in the end (delta: -43.6MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2023-11-23 14:46:23,563 INFO L158 Benchmark]: Witness Printer took 119.84ms. Allocated memory is still 234.9MB. Free memory was 132.1MB in the beginning and 126.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 14:46:23,565 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.13ms. Allocated memory is still 153.1MB. Free memory was 122.2MB in the beginning and 109.4MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.33ms. Allocated memory is still 153.1MB. Free memory was 109.4MB in the beginning and 107.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.73ms. Allocated memory is still 153.1MB. Free memory was 107.6MB in the beginning and 105.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 523.39ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 89.3MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4029.33ms. Allocated memory was 153.1MB in the beginning and 234.9MB in the end (delta: 81.8MB). Free memory was 88.5MB in the beginning and 132.1MB in the end (delta: -43.6MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. * Witness Printer took 119.84ms. Allocated memory is still 234.9MB. Free memory was 132.1MB in the beginning and 126.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 77]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 113]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 171]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 109 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 258 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164 IncrementalHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 220 mSDtfsCounter, 164 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 169 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 662 SizeOfPredicates, 7 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 24/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((main__loop_entered % 4294967296) == 0) RESULT: Ultimate proved your program to be correct! [2023-11-23 14:46:23,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE