./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:36:35,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:36:35,746 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 16:36:35,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:36:35,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:36:35,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:36:35,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:36:35,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:36:35,781 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 16:36:35,781 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 16:36:35,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:36:35,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:36:35,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:36:35,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:36:35,783 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:36:35,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:36:35,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:36:35,784 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:36:35,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:36:35,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:36:35,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:36:35,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:36:35,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:36:35,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:36:35,791 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:36:35,791 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:36:35,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:36:35,791 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:36:35,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:36:35,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:36:35,792 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 16:36:35,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:36:35,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:36:35,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:36:35,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:36:35,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:36:35,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:36:35,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:36:35,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:36:35,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:36:35,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:36:35,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:36:35,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2024-10-14 16:36:36,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:36:36,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:36:36,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:36:36,084 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:36:36,085 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:36:36,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2024-10-14 16:36:37,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:36:37,865 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:36:37,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2024-10-14 16:36:37,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/311b3a097/e85690ac910b4328b14bb4d3a0a05202/FLAG15517d408 [2024-10-14 16:36:37,904 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/311b3a097/e85690ac910b4328b14bb4d3a0a05202 [2024-10-14 16:36:37,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:36:37,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:36:37,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:36:37,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:36:37,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:36:37,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:36:37" (1/1) ... [2024-10-14 16:36:37,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b9a789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:37, skipping insertion in model container [2024-10-14 16:36:37,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:36:37" (1/1) ... [2024-10-14 16:36:38,007 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:36:38,524 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2024-10-14 16:36:38,542 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2024-10-14 16:36:38,675 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2024-10-14 16:36:38,676 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2024-10-14 16:36:38,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:36:38,715 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:36:38,760 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2024-10-14 16:36:38,765 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2024-10-14 16:36:38,817 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2024-10-14 16:36:38,818 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2024-10-14 16:36:38,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:36:38,894 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:36:38,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38 WrapperNode [2024-10-14 16:36:38,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:36:38,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:36:38,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:36:38,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:36:38,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:38,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,046 INFO L138 Inliner]: procedures = 282, calls = 339, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1638 [2024-10-14 16:36:39,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:36:39,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:36:39,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:36:39,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:36:39,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,188 INFO L175 MemorySlicer]: Split 309 memory accesses to 4 slices as follows [2, 3, 270, 34]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 63 writes are split as follows [0, 2, 57, 4]. [2024-10-14 16:36:39,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:36:39,291 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:36:39,292 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:36:39,292 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:36:39,293 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (1/1) ... [2024-10-14 16:36:39,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:36:39,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:36:39,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 16:36:39,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 16:36:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 16:36:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 16:36:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 16:36:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 16:36:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-14 16:36:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 16:36:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2024-10-14 16:36:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2024-10-14 16:36:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 16:36:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 16:36:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 16:36:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 16:36:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 16:36:39,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 16:36:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 16:36:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 16:36:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 16:36:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 16:36:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 16:36:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:36:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2024-10-14 16:36:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2024-10-14 16:36:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 16:36:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 16:36:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 16:36:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-14 16:36:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2024-10-14 16:36:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2024-10-14 16:36:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 16:36:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 16:36:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 16:36:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 16:36:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:36:39,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:36:39,682 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:36:39,684 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:36:41,122 INFO L? ?]: Removed 364 outVars from TransFormulas that were not future-live. [2024-10-14 16:36:41,122 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:36:41,182 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:36:41,186 INFO L314 CfgBuilder]: Removed 72 assume(true) statements. [2024-10-14 16:36:41,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:36:41 BoogieIcfgContainer [2024-10-14 16:36:41,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:36:41,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:36:41,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:36:41,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:36:41,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:36:37" (1/3) ... [2024-10-14 16:36:41,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98c9d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:36:41, skipping insertion in model container [2024-10-14 16:36:41,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:36:38" (2/3) ... [2024-10-14 16:36:41,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98c9d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:36:41, skipping insertion in model container [2024-10-14 16:36:41,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:36:41" (3/3) ... [2024-10-14 16:36:41,195 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2024-10-14 16:36:41,211 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:36:41,211 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-14 16:36:41,325 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:36:41,332 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31be3dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:36:41,333 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 16:36:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 462 states, 438 states have (on average 1.6141552511415524) internal successors, (707), 442 states have internal predecessors, (707), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 16:36:41,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 16:36:41,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:41,348 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:41,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:41,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash 123534520, now seen corresponding path program 1 times [2024-10-14 16:36:41,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:41,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653533757] [2024-10-14 16:36:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:41,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:41,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653533757] [2024-10-14 16:36:41,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653533757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:41,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:41,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:36:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781931846] [2024-10-14 16:36:41,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:41,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:36:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:36:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:36:41,594 INFO L87 Difference]: Start difference. First operand has 462 states, 438 states have (on average 1.6141552511415524) internal successors, (707), 442 states have internal predecessors, (707), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:41,710 INFO L93 Difference]: Finished difference Result 921 states and 1486 transitions. [2024-10-14 16:36:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:36:41,716 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-10-14 16:36:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:41,731 INFO L225 Difference]: With dead ends: 921 [2024-10-14 16:36:41,731 INFO L226 Difference]: Without dead ends: 458 [2024-10-14 16:36:41,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:36:41,740 INFO L432 NwaCegarLoop]: 647 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:41,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 647 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 16:36:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-10-14 16:36:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2024-10-14 16:36:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 435 states have (on average 1.4344827586206896) internal successors, (624), 439 states have internal predecessors, (624), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 654 transitions. [2024-10-14 16:36:41,808 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 654 transitions. Word has length 7 [2024-10-14 16:36:41,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:41,809 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 654 transitions. [2024-10-14 16:36:41,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 654 transitions. [2024-10-14 16:36:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 16:36:41,810 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:41,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:41,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:36:41,811 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:41,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash 215496090, now seen corresponding path program 1 times [2024-10-14 16:36:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:41,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280447011] [2024-10-14 16:36:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:41,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:42,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:42,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280447011] [2024-10-14 16:36:42,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280447011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:42,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:42,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:36:42,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129602179] [2024-10-14 16:36:42,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:42,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:36:42,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:42,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:36:42,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:36:42,048 INFO L87 Difference]: Start difference. First operand 458 states and 654 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:42,259 INFO L93 Difference]: Finished difference Result 1141 states and 1637 transitions. [2024-10-14 16:36:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:36:42,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 16:36:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:42,265 INFO L225 Difference]: With dead ends: 1141 [2024-10-14 16:36:42,265 INFO L226 Difference]: Without dead ends: 894 [2024-10-14 16:36:42,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:36:42,269 INFO L432 NwaCegarLoop]: 721 mSDtfsCounter, 602 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:42,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 2059 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:36:42,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2024-10-14 16:36:42,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 460. [2024-10-14 16:36:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 437 states have (on average 1.4324942791762014) internal successors, (626), 441 states have internal predecessors, (626), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 656 transitions. [2024-10-14 16:36:42,302 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 656 transitions. Word has length 9 [2024-10-14 16:36:42,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:42,302 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 656 transitions. [2024-10-14 16:36:42,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 656 transitions. [2024-10-14 16:36:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 16:36:42,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:42,305 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:42,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:36:42,306 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:42,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1344700540, now seen corresponding path program 1 times [2024-10-14 16:36:42,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:42,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064140375] [2024-10-14 16:36:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:42,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:42,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064140375] [2024-10-14 16:36:42,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064140375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:42,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:42,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:36:42,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601831393] [2024-10-14 16:36:42,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:42,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:36:42,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:42,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:36:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:36:42,667 INFO L87 Difference]: Start difference. First operand 460 states and 656 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:42,787 INFO L93 Difference]: Finished difference Result 875 states and 1243 transitions. [2024-10-14 16:36:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:36:42,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-14 16:36:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:42,793 INFO L225 Difference]: With dead ends: 875 [2024-10-14 16:36:42,793 INFO L226 Difference]: Without dead ends: 418 [2024-10-14 16:36:42,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:36:42,796 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 36 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:42,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1611 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:36:42,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-10-14 16:36:42,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2024-10-14 16:36:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 395 states have (on average 1.389873417721519) internal successors, (549), 399 states have internal predecessors, (549), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 579 transitions. [2024-10-14 16:36:42,820 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 579 transitions. Word has length 64 [2024-10-14 16:36:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:42,820 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 579 transitions. [2024-10-14 16:36:42,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:42,821 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 579 transitions. [2024-10-14 16:36:42,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 16:36:42,825 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:42,825 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:42,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:36:42,826 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:42,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1676463336, now seen corresponding path program 1 times [2024-10-14 16:36:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:42,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378946979] [2024-10-14 16:36:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:42,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:42,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:42,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378946979] [2024-10-14 16:36:42,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378946979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:42,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:42,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:36:42,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477340163] [2024-10-14 16:36:42,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:42,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:36:42,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:42,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:36:42,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:36:42,971 INFO L87 Difference]: Start difference. First operand 418 states and 579 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:43,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:43,053 INFO L93 Difference]: Finished difference Result 827 states and 1149 transitions. [2024-10-14 16:36:43,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:36:43,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-14 16:36:43,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:43,056 INFO L225 Difference]: With dead ends: 827 [2024-10-14 16:36:43,056 INFO L226 Difference]: Without dead ends: 412 [2024-10-14 16:36:43,057 INFO L431 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 [2024-10-14 16:36:43,058 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 9 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:43,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1612 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:36:43,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-10-14 16:36:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-10-14 16:36:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 389 states have (on average 1.3856041131105399) internal successors, (539), 393 states have internal predecessors, (539), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:43,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 569 transitions. [2024-10-14 16:36:43,070 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 569 transitions. Word has length 64 [2024-10-14 16:36:43,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:43,071 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 569 transitions. [2024-10-14 16:36:43,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:43,071 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 569 transitions. [2024-10-14 16:36:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 16:36:43,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:43,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:43,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:36:43,075 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:43,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1873954576, now seen corresponding path program 1 times [2024-10-14 16:36:43,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:43,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764972882] [2024-10-14 16:36:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:43,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:43,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:43,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764972882] [2024-10-14 16:36:43,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764972882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:43,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:43,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 16:36:43,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737562729] [2024-10-14 16:36:43,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:43,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:36:43,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:43,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:36:43,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:36:43,479 INFO L87 Difference]: Start difference. First operand 412 states and 569 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:43,873 INFO L93 Difference]: Finished difference Result 826 states and 1143 transitions. [2024-10-14 16:36:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:36:43,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-14 16:36:43,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:43,876 INFO L225 Difference]: With dead ends: 826 [2024-10-14 16:36:43,876 INFO L226 Difference]: Without dead ends: 417 [2024-10-14 16:36:43,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:36:43,878 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 10 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:43,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2431 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:36:43,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-10-14 16:36:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 414. [2024-10-14 16:36:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 391 states have (on average 1.3836317135549872) internal successors, (541), 395 states have internal predecessors, (541), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 571 transitions. [2024-10-14 16:36:43,890 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 571 transitions. Word has length 64 [2024-10-14 16:36:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:43,890 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 571 transitions. [2024-10-14 16:36:43,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 571 transitions. [2024-10-14 16:36:43,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-14 16:36:43,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:43,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:43,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:36:43,892 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:43,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1439444555, now seen corresponding path program 1 times [2024-10-14 16:36:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:43,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930900547] [2024-10-14 16:36:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:43,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:44,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:44,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930900547] [2024-10-14 16:36:44,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930900547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:44,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:44,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:36:44,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228373684] [2024-10-14 16:36:44,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:44,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:36:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:36:44,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:36:44,207 INFO L87 Difference]: Start difference. First operand 414 states and 571 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:44,370 INFO L93 Difference]: Finished difference Result 825 states and 1139 transitions. [2024-10-14 16:36:44,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:36:44,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-14 16:36:44,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:44,373 INFO L225 Difference]: With dead ends: 825 [2024-10-14 16:36:44,374 INFO L226 Difference]: Without dead ends: 414 [2024-10-14 16:36:44,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:36:44,377 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 13 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:44,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1524 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:36:44,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-10-14 16:36:44,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-10-14 16:36:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 391 states have (on average 1.381074168797954) internal successors, (540), 395 states have internal predecessors, (540), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 570 transitions. [2024-10-14 16:36:44,391 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 570 transitions. Word has length 65 [2024-10-14 16:36:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:44,392 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 570 transitions. [2024-10-14 16:36:44,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 570 transitions. [2024-10-14 16:36:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-14 16:36:44,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:44,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:44,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:36:44,394 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:44,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:44,394 INFO L85 PathProgramCache]: Analyzing trace with hash -395161161, now seen corresponding path program 1 times [2024-10-14 16:36:44,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:44,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699944177] [2024-10-14 16:36:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:44,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:44,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699944177] [2024-10-14 16:36:44,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699944177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:44,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:44,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 16:36:44,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351312450] [2024-10-14 16:36:44,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:44,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 16:36:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 16:36:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:36:44,706 INFO L87 Difference]: Start difference. First operand 414 states and 570 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:45,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:45,064 INFO L93 Difference]: Finished difference Result 830 states and 1145 transitions. [2024-10-14 16:36:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 16:36:45,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-14 16:36:45,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:45,067 INFO L225 Difference]: With dead ends: 830 [2024-10-14 16:36:45,068 INFO L226 Difference]: Without dead ends: 419 [2024-10-14 16:36:45,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:36:45,069 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 10 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:45,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2917 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:36:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-10-14 16:36:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 418. [2024-10-14 16:36:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 395 states have (on average 1.379746835443038) internal successors, (545), 399 states have internal predecessors, (545), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 575 transitions. [2024-10-14 16:36:45,083 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 575 transitions. Word has length 65 [2024-10-14 16:36:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:45,084 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 575 transitions. [2024-10-14 16:36:45,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 575 transitions. [2024-10-14 16:36:45,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-14 16:36:45,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:45,085 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:45,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:36:45,086 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:45,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1465365099, now seen corresponding path program 1 times [2024-10-14 16:36:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:45,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965680809] [2024-10-14 16:36:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:45,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:45,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:45,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965680809] [2024-10-14 16:36:45,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965680809] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:45,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:45,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 16:36:45,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776126804] [2024-10-14 16:36:45,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:45,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:36:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:45,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:36:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:36:45,324 INFO L87 Difference]: Start difference. First operand 418 states and 575 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:45,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:45,580 INFO L93 Difference]: Finished difference Result 836 states and 1152 transitions. [2024-10-14 16:36:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:36:45,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-14 16:36:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:45,583 INFO L225 Difference]: With dead ends: 836 [2024-10-14 16:36:45,583 INFO L226 Difference]: Without dead ends: 421 [2024-10-14 16:36:45,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:36:45,584 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 4 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:45,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1996 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 16:36:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-14 16:36:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2024-10-14 16:36:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 398 states have (on average 1.3768844221105527) internal successors, (548), 402 states have internal predecessors, (548), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 578 transitions. [2024-10-14 16:36:45,602 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 578 transitions. Word has length 66 [2024-10-14 16:36:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:45,603 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 578 transitions. [2024-10-14 16:36:45,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 578 transitions. [2024-10-14 16:36:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-14 16:36:45,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:45,604 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:45,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 16:36:45,604 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:45,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash 55631932, now seen corresponding path program 1 times [2024-10-14 16:36:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:45,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225838329] [2024-10-14 16:36:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:45,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:45,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:45,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225838329] [2024-10-14 16:36:45,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225838329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:45,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 16:36:45,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564953101] [2024-10-14 16:36:45,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:45,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 16:36:45,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 16:36:45,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-14 16:36:45,971 INFO L87 Difference]: Start difference. First operand 421 states and 578 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:46,528 INFO L93 Difference]: Finished difference Result 852 states and 1174 transitions. [2024-10-14 16:36:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:36:46,529 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-14 16:36:46,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:46,531 INFO L225 Difference]: With dead ends: 852 [2024-10-14 16:36:46,531 INFO L226 Difference]: Without dead ends: 434 [2024-10-14 16:36:46,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-14 16:36:46,533 INFO L432 NwaCegarLoop]: 539 mSDtfsCounter, 30 mSDsluCounter, 3397 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3936 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:46,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3936 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 16:36:46,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-10-14 16:36:46,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2024-10-14 16:36:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 408 states have (on average 1.3774509803921569) internal successors, (562), 412 states have internal predecessors, (562), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 592 transitions. [2024-10-14 16:36:46,544 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 592 transitions. Word has length 66 [2024-10-14 16:36:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:46,544 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 592 transitions. [2024-10-14 16:36:46,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:46,545 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 592 transitions. [2024-10-14 16:36:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-14 16:36:46,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:46,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:46,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 16:36:46,546 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:46,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1668302933, now seen corresponding path program 1 times [2024-10-14 16:36:46,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:46,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019675994] [2024-10-14 16:36:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:46,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:46,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:46,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019675994] [2024-10-14 16:36:46,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019675994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:46,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 16:36:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10026182] [2024-10-14 16:36:46,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:46,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 16:36:46,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 16:36:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-14 16:36:46,970 INFO L87 Difference]: Start difference. First operand 431 states and 592 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:47,321 INFO L93 Difference]: Finished difference Result 862 states and 1186 transitions. [2024-10-14 16:36:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 16:36:47,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-14 16:36:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:47,324 INFO L225 Difference]: With dead ends: 862 [2024-10-14 16:36:47,324 INFO L226 Difference]: Without dead ends: 434 [2024-10-14 16:36:47,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 16:36:47,326 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 23 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:47,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2971 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:36:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-10-14 16:36:47,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2024-10-14 16:36:47,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 411 states have (on average 1.3746958637469586) internal successors, (565), 415 states have internal predecessors, (565), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 595 transitions. [2024-10-14 16:36:47,338 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 595 transitions. Word has length 66 [2024-10-14 16:36:47,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:47,339 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 595 transitions. [2024-10-14 16:36:47,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 595 transitions. [2024-10-14 16:36:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-14 16:36:47,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:47,340 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:47,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 16:36:47,340 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:47,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:47,341 INFO L85 PathProgramCache]: Analyzing trace with hash -267751346, now seen corresponding path program 1 times [2024-10-14 16:36:47,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:47,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597069577] [2024-10-14 16:36:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:47,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:47,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:47,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597069577] [2024-10-14 16:36:47,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597069577] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:47,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:47,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 16:36:47,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687256125] [2024-10-14 16:36:47,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:47,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 16:36:47,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 16:36:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:36:47,623 INFO L87 Difference]: Start difference. First operand 434 states and 595 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:47,996 INFO L93 Difference]: Finished difference Result 870 states and 1195 transitions. [2024-10-14 16:36:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 16:36:47,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-14 16:36:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:47,999 INFO L225 Difference]: With dead ends: 870 [2024-10-14 16:36:48,000 INFO L226 Difference]: Without dead ends: 439 [2024-10-14 16:36:48,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 16:36:48,001 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 9 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:48,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2923 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:36:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-10-14 16:36:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 434. [2024-10-14 16:36:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 411 states have (on average 1.3746958637469586) internal successors, (565), 415 states have internal predecessors, (565), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 595 transitions. [2024-10-14 16:36:48,012 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 595 transitions. Word has length 67 [2024-10-14 16:36:48,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:48,013 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 595 transitions. [2024-10-14 16:36:48,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 595 transitions. [2024-10-14 16:36:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-14 16:36:48,014 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:48,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:48,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 16:36:48,014 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:48,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:48,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1004481798, now seen corresponding path program 1 times [2024-10-14 16:36:48,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:48,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272913349] [2024-10-14 16:36:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:48,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:48,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272913349] [2024-10-14 16:36:48,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272913349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:48,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:48,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 16:36:48,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774863580] [2024-10-14 16:36:48,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:48,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 16:36:48,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 16:36:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-14 16:36:48,560 INFO L87 Difference]: Start difference. First operand 434 states and 595 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:49,364 INFO L93 Difference]: Finished difference Result 1258 states and 1737 transitions. [2024-10-14 16:36:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:36:49,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-10-14 16:36:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:49,368 INFO L225 Difference]: With dead ends: 1258 [2024-10-14 16:36:49,368 INFO L226 Difference]: Without dead ends: 827 [2024-10-14 16:36:49,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:36:49,371 INFO L432 NwaCegarLoop]: 573 mSDtfsCounter, 646 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:49,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 3045 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 16:36:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-10-14 16:36:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 465. [2024-10-14 16:36:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 442 states have (on average 1.3484162895927603) internal successors, (596), 446 states have internal predecessors, (596), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 626 transitions. [2024-10-14 16:36:49,390 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 626 transitions. Word has length 67 [2024-10-14 16:36:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:49,391 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 626 transitions. [2024-10-14 16:36:49,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 626 transitions. [2024-10-14 16:36:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-14 16:36:49,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:49,392 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:49,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 16:36:49,392 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:49,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:49,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1868095393, now seen corresponding path program 1 times [2024-10-14 16:36:49,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:49,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467923771] [2024-10-14 16:36:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:49,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467923771] [2024-10-14 16:36:49,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467923771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:49,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:49,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 16:36:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687069203] [2024-10-14 16:36:49,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:49,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 16:36:49,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 16:36:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-14 16:36:49,674 INFO L87 Difference]: Start difference. First operand 465 states and 626 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:49,995 INFO L93 Difference]: Finished difference Result 906 states and 1232 transitions. [2024-10-14 16:36:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 16:36:49,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-14 16:36:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:49,998 INFO L225 Difference]: With dead ends: 906 [2024-10-14 16:36:49,998 INFO L226 Difference]: Without dead ends: 475 [2024-10-14 16:36:49,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-14 16:36:50,000 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 16 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:50,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3012 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:36:50,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-10-14 16:36:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 468. [2024-10-14 16:36:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 445 states have (on average 1.348314606741573) internal successors, (600), 449 states have internal predecessors, (600), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 630 transitions. [2024-10-14 16:36:50,015 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 630 transitions. Word has length 68 [2024-10-14 16:36:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:50,016 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 630 transitions. [2024-10-14 16:36:50,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 630 transitions. [2024-10-14 16:36:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-14 16:36:50,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:50,017 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:50,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 16:36:50,017 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:50,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:50,018 INFO L85 PathProgramCache]: Analyzing trace with hash -289631099, now seen corresponding path program 1 times [2024-10-14 16:36:50,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:50,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816869281] [2024-10-14 16:36:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:50,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:50,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:50,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816869281] [2024-10-14 16:36:50,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816869281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:50,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:50,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 16:36:50,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514390662] [2024-10-14 16:36:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:50,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 16:36:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:50,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 16:36:50,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-14 16:36:50,311 INFO L87 Difference]: Start difference. First operand 468 states and 630 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:50,860 INFO L93 Difference]: Finished difference Result 912 states and 1240 transitions. [2024-10-14 16:36:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:36:50,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-14 16:36:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:50,864 INFO L225 Difference]: With dead ends: 912 [2024-10-14 16:36:50,864 INFO L226 Difference]: Without dead ends: 478 [2024-10-14 16:36:50,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-14 16:36:50,865 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 26 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3872 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:50,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3872 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 16:36:50,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-10-14 16:36:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 468. [2024-10-14 16:36:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 445 states have (on average 1.348314606741573) internal successors, (600), 449 states have internal predecessors, (600), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 630 transitions. [2024-10-14 16:36:50,884 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 630 transitions. Word has length 68 [2024-10-14 16:36:50,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:50,884 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 630 transitions. [2024-10-14 16:36:50,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 630 transitions. [2024-10-14 16:36:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-14 16:36:50,885 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:50,885 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:50,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 16:36:50,886 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:50,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:50,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1391773950, now seen corresponding path program 1 times [2024-10-14 16:36:50,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:50,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870608811] [2024-10-14 16:36:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:51,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:51,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870608811] [2024-10-14 16:36:51,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870608811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:51,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:51,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 16:36:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179118526] [2024-10-14 16:36:51,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:51,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:36:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:36:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:36:51,215 INFO L87 Difference]: Start difference. First operand 468 states and 630 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:51,664 INFO L93 Difference]: Finished difference Result 918 states and 1249 transitions. [2024-10-14 16:36:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:36:51,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-14 16:36:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:51,666 INFO L225 Difference]: With dead ends: 918 [2024-10-14 16:36:51,667 INFO L226 Difference]: Without dead ends: 484 [2024-10-14 16:36:51,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-14 16:36:51,669 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 22 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:51,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3468 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:36:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-10-14 16:36:51,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2024-10-14 16:36:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 455 states have (on average 1.3450549450549452) internal successors, (612), 459 states have internal predecessors, (612), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 642 transitions. [2024-10-14 16:36:51,684 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 642 transitions. Word has length 69 [2024-10-14 16:36:51,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:51,684 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 642 transitions. [2024-10-14 16:36:51,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:51,685 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 642 transitions. [2024-10-14 16:36:51,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-14 16:36:51,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:51,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:51,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 16:36:51,685 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:51,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1073237862, now seen corresponding path program 1 times [2024-10-14 16:36:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:51,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508780897] [2024-10-14 16:36:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:52,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:52,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508780897] [2024-10-14 16:36:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508780897] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:52,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:52,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 16:36:52,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051622100] [2024-10-14 16:36:52,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:52,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:36:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:36:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:36:52,010 INFO L87 Difference]: Start difference. First operand 478 states and 642 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:52,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:52,543 INFO L93 Difference]: Finished difference Result 938 states and 1273 transitions. [2024-10-14 16:36:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:36:52,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-14 16:36:52,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:52,547 INFO L225 Difference]: With dead ends: 938 [2024-10-14 16:36:52,547 INFO L226 Difference]: Without dead ends: 494 [2024-10-14 16:36:52,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:36:52,548 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 13 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4387 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:52,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4387 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 16:36:52,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-10-14 16:36:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 481. [2024-10-14 16:36:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 458 states have (on average 1.3449781659388647) internal successors, (616), 462 states have internal predecessors, (616), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 646 transitions. [2024-10-14 16:36:52,568 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 646 transitions. Word has length 69 [2024-10-14 16:36:52,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:52,568 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 646 transitions. [2024-10-14 16:36:52,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 646 transitions. [2024-10-14 16:36:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-14 16:36:52,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:52,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:52,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 16:36:52,570 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:52,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1723676698, now seen corresponding path program 1 times [2024-10-14 16:36:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:52,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090532333] [2024-10-14 16:36:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:52,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:52,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:52,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090532333] [2024-10-14 16:36:52,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090532333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:52,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:52,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 16:36:52,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867783621] [2024-10-14 16:36:52,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:52,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 16:36:52,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:52,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 16:36:52,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:36:52,992 INFO L87 Difference]: Start difference. First operand 481 states and 646 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:53,317 INFO L93 Difference]: Finished difference Result 933 states and 1263 transitions. [2024-10-14 16:36:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 16:36:53,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-14 16:36:53,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:53,320 INFO L225 Difference]: With dead ends: 933 [2024-10-14 16:36:53,320 INFO L226 Difference]: Without dead ends: 486 [2024-10-14 16:36:53,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:36:53,322 INFO L432 NwaCegarLoop]: 539 mSDtfsCounter, 7 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:53,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2947 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:36:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-10-14 16:36:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 481. [2024-10-14 16:36:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 458 states have (on average 1.3427947598253276) internal successors, (615), 462 states have internal predecessors, (615), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 645 transitions. [2024-10-14 16:36:53,339 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 645 transitions. Word has length 69 [2024-10-14 16:36:53,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:53,339 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 645 transitions. [2024-10-14 16:36:53,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:53,339 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 645 transitions. [2024-10-14 16:36:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-14 16:36:53,341 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:53,341 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:53,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 16:36:53,342 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:53,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:53,342 INFO L85 PathProgramCache]: Analyzing trace with hash -958619597, now seen corresponding path program 1 times [2024-10-14 16:36:53,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:53,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131996966] [2024-10-14 16:36:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:53,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:53,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:53,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131996966] [2024-10-14 16:36:53,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131996966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:53,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:53,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 16:36:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440494523] [2024-10-14 16:36:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:53,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 16:36:53,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 16:36:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:36:53,605 INFO L87 Difference]: Start difference. First operand 481 states and 645 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:53,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:53,954 INFO L93 Difference]: Finished difference Result 931 states and 1261 transitions. [2024-10-14 16:36:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 16:36:53,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-14 16:36:53,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:53,957 INFO L225 Difference]: With dead ends: 931 [2024-10-14 16:36:53,957 INFO L226 Difference]: Without dead ends: 484 [2024-10-14 16:36:53,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:36:53,959 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 4 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:53,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2906 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:36:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-10-14 16:36:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2024-10-14 16:36:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 461 states have (on average 1.3405639913232104) internal successors, (618), 465 states have internal predecessors, (618), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 648 transitions. [2024-10-14 16:36:53,995 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 648 transitions. Word has length 69 [2024-10-14 16:36:53,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:53,996 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 648 transitions. [2024-10-14 16:36:53,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 648 transitions. [2024-10-14 16:36:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-14 16:36:53,997 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:53,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:53,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 16:36:53,997 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:53,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:53,998 INFO L85 PathProgramCache]: Analyzing trace with hash 710707364, now seen corresponding path program 1 times [2024-10-14 16:36:53,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:53,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625777986] [2024-10-14 16:36:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:54,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:54,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625777986] [2024-10-14 16:36:54,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625777986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:54,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:54,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 16:36:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002656178] [2024-10-14 16:36:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:54,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:36:54,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:54,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:36:54,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:36:54,444 INFO L87 Difference]: Start difference. First operand 484 states and 648 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:58,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 16:36:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:58,937 INFO L93 Difference]: Finished difference Result 946 states and 1280 transitions. [2024-10-14 16:36:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:36:58,938 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-14 16:36:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:58,940 INFO L225 Difference]: With dead ends: 946 [2024-10-14 16:36:58,941 INFO L226 Difference]: Without dead ends: 496 [2024-10-14 16:36:58,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:36:58,942 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 9 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3913 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:58,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3913 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 707 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-10-14 16:36:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-10-14 16:36:58,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 488. [2024-10-14 16:36:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 465 states have (on average 1.3397849462365592) internal successors, (623), 469 states have internal predecessors, (623), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 653 transitions. [2024-10-14 16:36:58,959 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 653 transitions. Word has length 70 [2024-10-14 16:36:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:58,959 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 653 transitions. [2024-10-14 16:36:58,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 653 transitions. [2024-10-14 16:36:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-14 16:36:58,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:58,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:58,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 16:36:58,961 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:58,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:58,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1655686255, now seen corresponding path program 1 times [2024-10-14 16:36:58,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:58,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284298589] [2024-10-14 16:36:58,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:58,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:36:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:36:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:36:59,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:36:59,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284298589] [2024-10-14 16:36:59,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284298589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:36:59,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:36:59,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 16:36:59,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983223268] [2024-10-14 16:36:59,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:36:59,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 16:36:59,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:36:59,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 16:36:59,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-14 16:36:59,324 INFO L87 Difference]: Start difference. First operand 488 states and 653 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:36:59,933 INFO L93 Difference]: Finished difference Result 955 states and 1290 transitions. [2024-10-14 16:36:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:36:59,933 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-14 16:36:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:36:59,937 INFO L225 Difference]: With dead ends: 955 [2024-10-14 16:36:59,937 INFO L226 Difference]: Without dead ends: 501 [2024-10-14 16:36:59,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-14 16:36:59,939 INFO L432 NwaCegarLoop]: 539 mSDtfsCounter, 22 mSDsluCounter, 4382 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4921 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 16:36:59,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4921 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 16:36:59,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-10-14 16:36:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 491. [2024-10-14 16:36:59,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 468 states have (on average 1.3376068376068375) internal successors, (626), 472 states have internal predecessors, (626), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:36:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 656 transitions. [2024-10-14 16:36:59,957 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 656 transitions. Word has length 70 [2024-10-14 16:36:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:36:59,957 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 656 transitions. [2024-10-14 16:36:59,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:36:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 656 transitions. [2024-10-14 16:36:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-14 16:36:59,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:36:59,959 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:36:59,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 16:36:59,959 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:36:59,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:36:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1604752520, now seen corresponding path program 1 times [2024-10-14 16:36:59,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:36:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316710887] [2024-10-14 16:36:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:36:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316710887] [2024-10-14 16:37:00,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316710887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:00,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:00,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 16:37:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817395802] [2024-10-14 16:37:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:00,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:37:00,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:00,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:37:00,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:37:00,513 INFO L87 Difference]: Start difference. First operand 491 states and 656 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:04,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 16:37:05,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:05,368 INFO L93 Difference]: Finished difference Result 952 states and 1284 transitions. [2024-10-14 16:37:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:37:05,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-14 16:37:05,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:05,371 INFO L225 Difference]: With dead ends: 952 [2024-10-14 16:37:05,371 INFO L226 Difference]: Without dead ends: 495 [2024-10-14 16:37:05,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:37:05,372 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 31 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4313 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:05,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 4313 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 756 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-10-14 16:37:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-10-14 16:37:05,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2024-10-14 16:37:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 469 states have (on average 1.3368869936034116) internal successors, (627), 473 states have internal predecessors, (627), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 657 transitions. [2024-10-14 16:37:05,386 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 657 transitions. Word has length 70 [2024-10-14 16:37:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:05,386 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 657 transitions. [2024-10-14 16:37:05,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 657 transitions. [2024-10-14 16:37:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-14 16:37:05,387 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:05,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:05,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 16:37:05,388 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:05,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -231710400, now seen corresponding path program 1 times [2024-10-14 16:37:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:05,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077777128] [2024-10-14 16:37:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:05,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:05,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077777128] [2024-10-14 16:37:05,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077777128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:05,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:05,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 16:37:05,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872550155] [2024-10-14 16:37:05,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:05,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 16:37:05,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:05,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 16:37:05,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-14 16:37:05,639 INFO L87 Difference]: Start difference. First operand 492 states and 657 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:06,280 INFO L93 Difference]: Finished difference Result 959 states and 1293 transitions. [2024-10-14 16:37:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:37:06,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-14 16:37:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:06,284 INFO L225 Difference]: With dead ends: 959 [2024-10-14 16:37:06,284 INFO L226 Difference]: Without dead ends: 501 [2024-10-14 16:37:06,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-14 16:37:06,286 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 22 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3872 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:06,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3872 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 16:37:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-10-14 16:37:06,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 489. [2024-10-14 16:37:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 466 states have (on average 1.3390557939914163) internal successors, (624), 470 states have internal predecessors, (624), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 654 transitions. [2024-10-14 16:37:06,307 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 654 transitions. Word has length 70 [2024-10-14 16:37:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:06,307 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 654 transitions. [2024-10-14 16:37:06,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 654 transitions. [2024-10-14 16:37:06,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-14 16:37:06,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:06,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:06,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-14 16:37:06,310 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:06,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:06,311 INFO L85 PathProgramCache]: Analyzing trace with hash -834701604, now seen corresponding path program 1 times [2024-10-14 16:37:06,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:06,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673490853] [2024-10-14 16:37:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:06,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:14,854 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* (div |c_ULTIMATE.start_main_~_hj_j~0#1| 4294967296) 524288)) (.cse0 (div |c_ULTIMATE.start_main_~_hj_j~0#1| 8192))) (and (= .cse0 (+ .cse1 |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) (let ((.cse2 (div |c_ULTIMATE.start_main_~_hj_i~0#1| 4294967296))) (or (< (+ .cse1 |c_ULTIMATE.start_main_~_ha_hashv~0#1| (* .cse2 4294967296)) (+ .cse0 |c_ULTIMATE.start_main_~_hj_i~0#1|)) (< 4408680405129836980 (+ (* 1030789529 |c_ULTIMATE.start_main_~_hj_i~0#1|) (* 2147483648 (div (+ (* (- 4123158118) |c_ULTIMATE.start_main_~_hj_j~0#1|) 8817360810260198248 (* (- 2061579059) |c_ULTIMATE.start_main_~_hj_i~0#1|) .cse1 (* (- 2061579059) |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* (- 1) .cse0)) 4294967296)) (* 1030789530 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* |c_ULTIMATE.start_main_~_hj_j~0#1| 2061579059) (* .cse2 2147483648))))))) is different from false [2024-10-14 16:37:25,491 WARN L286 SmtUtils]: Spent 6.62s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-10-14 16:37:29,496 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* (div |c_ULTIMATE.start_main_~_hj_j~0#1| 4294967296) 524288)) (.cse0 (div |c_ULTIMATE.start_main_~_hj_j~0#1| 8192))) (and (= .cse0 (+ .cse1 |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) (<= 4408680405129836981 (+ (* 1030789530 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* |c_ULTIMATE.start_main_~_hj_j~0#1| 2061579059) (* (div (+ (* (- 4123158118) |c_ULTIMATE.start_main_~_hj_j~0#1|) 8817360810260198248 .cse1 (* (- 2061579059) |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* (- 1) .cse0)) 4294967296) 2147483648))))) is different from false [2024-10-14 16:37:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:29,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:29,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673490853] [2024-10-14 16:37:29,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673490853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:29,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:29,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 16:37:29,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216174711] [2024-10-14 16:37:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:29,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 16:37:29,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 16:37:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=57, Unknown=2, NotChecked=30, Total=110 [2024-10-14 16:37:29,556 INFO L87 Difference]: Start difference. First operand 489 states and 654 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:30,265 INFO L93 Difference]: Finished difference Result 968 states and 1311 transitions. [2024-10-14 16:37:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 16:37:30,265 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-14 16:37:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:30,268 INFO L225 Difference]: With dead ends: 968 [2024-10-14 16:37:30,268 INFO L226 Difference]: Without dead ends: 513 [2024-10-14 16:37:30,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=21, Invalid=57, Unknown=2, NotChecked=30, Total=110 [2024-10-14 16:37:30,270 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 36 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4823 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:30,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4823 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 700 Invalid, 0 Unknown, 317 Unchecked, 0.7s Time] [2024-10-14 16:37:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-10-14 16:37:30,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 495. [2024-10-14 16:37:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 472 states have (on average 1.3389830508474576) internal successors, (632), 476 states have internal predecessors, (632), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 662 transitions. [2024-10-14 16:37:30,287 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 662 transitions. Word has length 70 [2024-10-14 16:37:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:30,287 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 662 transitions. [2024-10-14 16:37:30,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 662 transitions. [2024-10-14 16:37:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 16:37:30,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:30,288 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:30,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-14 16:37:30,288 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:30,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:30,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2107008199, now seen corresponding path program 1 times [2024-10-14 16:37:30,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:30,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199093208] [2024-10-14 16:37:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:30,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:30,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:30,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199093208] [2024-10-14 16:37:30,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199093208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:30,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:30,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-14 16:37:30,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232604882] [2024-10-14 16:37:30,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:30,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 16:37:30,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:30,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 16:37:30,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-14 16:37:30,672 INFO L87 Difference]: Start difference. First operand 495 states and 662 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:31,426 INFO L93 Difference]: Finished difference Result 968 states and 1308 transitions. [2024-10-14 16:37:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 16:37:31,427 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-14 16:37:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:31,430 INFO L225 Difference]: With dead ends: 968 [2024-10-14 16:37:31,430 INFO L226 Difference]: Without dead ends: 507 [2024-10-14 16:37:31,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-14 16:37:31,431 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 12 mSDsluCounter, 4804 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5346 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:31,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5346 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 16:37:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-10-14 16:37:31,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 502. [2024-10-14 16:37:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 479 states have (on average 1.3382045929018789) internal successors, (641), 483 states have internal predecessors, (641), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 671 transitions. [2024-10-14 16:37:31,447 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 671 transitions. Word has length 71 [2024-10-14 16:37:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:31,447 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 671 transitions. [2024-10-14 16:37:31,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 671 transitions. [2024-10-14 16:37:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 16:37:31,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:31,448 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:31,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-14 16:37:31,449 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:31,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash -602862145, now seen corresponding path program 1 times [2024-10-14 16:37:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:31,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947066267] [2024-10-14 16:37:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:31,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:31,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947066267] [2024-10-14 16:37:31,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947066267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:31,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:31,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 16:37:31,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119443588] [2024-10-14 16:37:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:31,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 16:37:31,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 16:37:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-14 16:37:31,750 INFO L87 Difference]: Start difference. First operand 502 states and 671 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:32,130 INFO L93 Difference]: Finished difference Result 975 states and 1316 transitions. [2024-10-14 16:37:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 16:37:32,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-14 16:37:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:32,135 INFO L225 Difference]: With dead ends: 975 [2024-10-14 16:37:32,139 INFO L226 Difference]: Without dead ends: 507 [2024-10-14 16:37:32,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:37:32,141 INFO L432 NwaCegarLoop]: 546 mSDtfsCounter, 33 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:32,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3472 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:37:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-10-14 16:37:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 499. [2024-10-14 16:37:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 476 states have (on average 1.338235294117647) internal successors, (637), 480 states have internal predecessors, (637), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 667 transitions. [2024-10-14 16:37:32,163 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 667 transitions. Word has length 71 [2024-10-14 16:37:32,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:32,164 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 667 transitions. [2024-10-14 16:37:32,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 667 transitions. [2024-10-14 16:37:32,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 16:37:32,165 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:32,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:32,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-14 16:37:32,166 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:32,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash -304772707, now seen corresponding path program 1 times [2024-10-14 16:37:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:32,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363331620] [2024-10-14 16:37:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:32,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:32,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:32,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363331620] [2024-10-14 16:37:32,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363331620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:32,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:32,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 16:37:32,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321136066] [2024-10-14 16:37:32,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:32,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 16:37:32,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 16:37:32,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:37:32,413 INFO L87 Difference]: Start difference. First operand 499 states and 667 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:32,754 INFO L93 Difference]: Finished difference Result 965 states and 1301 transitions. [2024-10-14 16:37:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 16:37:32,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-14 16:37:32,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:32,758 INFO L225 Difference]: With dead ends: 965 [2024-10-14 16:37:32,758 INFO L226 Difference]: Without dead ends: 500 [2024-10-14 16:37:32,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-14 16:37:32,759 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 45 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:32,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3002 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:37:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-10-14 16:37:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2024-10-14 16:37:32,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 473 states have (on average 1.3382663847780127) internal successors, (633), 477 states have internal predecessors, (633), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 663 transitions. [2024-10-14 16:37:32,777 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 663 transitions. Word has length 71 [2024-10-14 16:37:32,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:32,777 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 663 transitions. [2024-10-14 16:37:32,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 663 transitions. [2024-10-14 16:37:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 16:37:32,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:32,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:32,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-14 16:37:32,778 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:32,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:32,779 INFO L85 PathProgramCache]: Analyzing trace with hash -636705059, now seen corresponding path program 1 times [2024-10-14 16:37:32,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:32,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486715516] [2024-10-14 16:37:32,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:32,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:33,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:33,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486715516] [2024-10-14 16:37:33,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486715516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:33,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-14 16:37:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670114850] [2024-10-14 16:37:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:33,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 16:37:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:33,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 16:37:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-10-14 16:37:33,175 INFO L87 Difference]: Start difference. First operand 496 states and 663 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:34,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:34,067 INFO L93 Difference]: Finished difference Result 974 states and 1317 transitions. [2024-10-14 16:37:34,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 16:37:34,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-14 16:37:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:34,071 INFO L225 Difference]: With dead ends: 974 [2024-10-14 16:37:34,071 INFO L226 Difference]: Without dead ends: 512 [2024-10-14 16:37:34,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-14 16:37:34,072 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 14 mSDsluCounter, 4783 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5308 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:34,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5308 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 16:37:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-10-14 16:37:34,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 497. [2024-10-14 16:37:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 474 states have (on average 1.3375527426160339) internal successors, (634), 478 states have internal predecessors, (634), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 664 transitions. [2024-10-14 16:37:34,091 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 664 transitions. Word has length 71 [2024-10-14 16:37:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:34,091 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 664 transitions. [2024-10-14 16:37:34,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:34,091 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 664 transitions. [2024-10-14 16:37:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 16:37:34,092 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:34,092 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:34,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-14 16:37:34,093 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:34,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash 722303807, now seen corresponding path program 1 times [2024-10-14 16:37:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:34,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146230273] [2024-10-14 16:37:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:34,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:34,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146230273] [2024-10-14 16:37:34,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146230273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:34,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:34,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-14 16:37:34,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920614240] [2024-10-14 16:37:34,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:34,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:37:34,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:34,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:37:34,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:37:34,426 INFO L87 Difference]: Start difference. First operand 497 states and 664 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:35,009 INFO L93 Difference]: Finished difference Result 970 states and 1308 transitions. [2024-10-14 16:37:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:37:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-14 16:37:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:35,012 INFO L225 Difference]: With dead ends: 970 [2024-10-14 16:37:35,012 INFO L226 Difference]: Without dead ends: 507 [2024-10-14 16:37:35,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-14 16:37:35,013 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 8 mSDsluCounter, 3871 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4415 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:35,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4415 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 16:37:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-10-14 16:37:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 497. [2024-10-14 16:37:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 474 states have (on average 1.3375527426160339) internal successors, (634), 478 states have internal predecessors, (634), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 664 transitions. [2024-10-14 16:37:35,028 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 664 transitions. Word has length 71 [2024-10-14 16:37:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:35,029 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 664 transitions. [2024-10-14 16:37:35,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 664 transitions. [2024-10-14 16:37:35,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 16:37:35,030 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:35,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:35,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-14 16:37:35,031 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:35,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash 597134587, now seen corresponding path program 1 times [2024-10-14 16:37:35,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:35,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716768825] [2024-10-14 16:37:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:35,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:35,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:35,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716768825] [2024-10-14 16:37:35,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716768825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:35,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:35,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-14 16:37:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766123619] [2024-10-14 16:37:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:35,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 16:37:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 16:37:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-14 16:37:35,512 INFO L87 Difference]: Start difference. First operand 497 states and 664 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:37,148 INFO L93 Difference]: Finished difference Result 980 states and 1325 transitions. [2024-10-14 16:37:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 16:37:37,149 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-14 16:37:37,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:37,151 INFO L225 Difference]: With dead ends: 980 [2024-10-14 16:37:37,152 INFO L226 Difference]: Without dead ends: 517 [2024-10-14 16:37:37,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-10-14 16:37:37,153 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 35 mSDsluCounter, 5248 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 5775 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:37,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 5775 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-14 16:37:37,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-10-14 16:37:37,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 506. [2024-10-14 16:37:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 483 states have (on average 1.3374741200828157) internal successors, (646), 487 states have internal predecessors, (646), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 676 transitions. [2024-10-14 16:37:37,167 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 676 transitions. Word has length 71 [2024-10-14 16:37:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:37,168 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 676 transitions. [2024-10-14 16:37:37,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 676 transitions. [2024-10-14 16:37:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 16:37:37,169 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:37,169 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:37,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-14 16:37:37,169 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:37,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1443970447, now seen corresponding path program 1 times [2024-10-14 16:37:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:37,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549829970] [2024-10-14 16:37:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:38,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:38,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549829970] [2024-10-14 16:37:38,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549829970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:38,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:38,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 16:37:38,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844604669] [2024-10-14 16:37:38,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:38,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 16:37:38,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 16:37:38,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-14 16:37:38,040 INFO L87 Difference]: Start difference. First operand 506 states and 676 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:37:41,021 INFO L93 Difference]: Finished difference Result 1048 states and 1417 transitions. [2024-10-14 16:37:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 16:37:41,022 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-14 16:37:41,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:37:41,025 INFO L225 Difference]: With dead ends: 1048 [2024-10-14 16:37:41,025 INFO L226 Difference]: Without dead ends: 576 [2024-10-14 16:37:41,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-14 16:37:41,026 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 111 mSDsluCounter, 3819 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-14 16:37:41,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 4412 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-14 16:37:41,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-10-14 16:37:41,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 507. [2024-10-14 16:37:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 484 states have (on average 1.3388429752066116) internal successors, (648), 488 states have internal predecessors, (648), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:37:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 678 transitions. [2024-10-14 16:37:41,040 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 678 transitions. Word has length 71 [2024-10-14 16:37:41,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:37:41,041 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 678 transitions. [2024-10-14 16:37:41,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:41,041 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 678 transitions. [2024-10-14 16:37:41,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-14 16:37:41,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:37:41,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:37:41,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-14 16:37:41,042 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-14 16:37:41,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:37:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash -790554333, now seen corresponding path program 1 times [2024-10-14 16:37:41,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:37:41,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147997682] [2024-10-14 16:37:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:37:41,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:37:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:37:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:37:42,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:37:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147997682] [2024-10-14 16:37:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147997682] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:37:42,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:37:42,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 16:37:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825239321] [2024-10-14 16:37:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:37:42,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 16:37:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:37:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 16:37:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-14 16:37:42,115 INFO L87 Difference]: Start difference. First operand 507 states and 678 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:37:46,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 16:37:50,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-14 16:37:54,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []