./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.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 5e838264e6ed88ede0832d807d635f75755550116c48539e38a7650cef86d5a2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 00:53:46,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 00:53:46,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 00:53:46,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 00:53:46,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 00:53:46,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 00:53:46,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 00:53:46,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 00:53:46,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 00:53:46,654 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 00:53:46,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 00:53:46,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 00:53:46,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 00:53:46,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 00:53:46,655 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 00:53:46,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 00:53:46,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 00:53:46,658 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 00:53:46,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 00:53:46,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 00:53:46,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 00:53:46,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 00:53:46,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 00:53:46,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 00:53:46,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 00:53:46,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 00:53:46,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 00:53:46,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 00:53:46,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 00:53:46,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 00:53:46,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 00:53:46,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 00:53:46,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:53:46,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 00:53:46,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 00:53:46,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 00:53:46,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 00:53:46,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 00:53:46,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 00:53:46,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 00:53:46,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 00:53:46,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 00:53:46,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e838264e6ed88ede0832d807d635f75755550116c48539e38a7650cef86d5a2 [2024-11-19 00:53:46,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 00:53:46,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 00:53:46,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 00:53:46,909 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 00:53:46,909 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 00:53:46,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i [2024-11-19 00:53:48,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 00:53:48,412 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 00:53:48,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i [2024-11-19 00:53:48,427 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaed701ed/99da726ac03d44f2b3bcaa9d261bc12a/FLAGf7f4a842d [2024-11-19 00:53:48,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaed701ed/99da726ac03d44f2b3bcaa9d261bc12a [2024-11-19 00:53:48,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 00:53:48,805 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 00:53:48,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 00:53:48,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 00:53:48,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 00:53:48,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:53:48" (1/1) ... [2024-11-19 00:53:48,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a83dbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:48, skipping insertion in model container [2024-11-19 00:53:48,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:53:48" (1/1) ... [2024-11-19 00:53:48,840 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 00:53:48,989 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i[916,929] [2024-11-19 00:53:49,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:53:49,044 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 00:53:49,054 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i[916,929] [2024-11-19 00:53:49,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:53:49,096 INFO L204 MainTranslator]: Completed translation [2024-11-19 00:53:49,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49 WrapperNode [2024-11-19 00:53:49,097 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 00:53:49,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 00:53:49,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 00:53:49,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 00:53:49,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,148 INFO L138 Inliner]: procedures = 26, calls = 164, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 494 [2024-11-19 00:53:49,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 00:53:49,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 00:53:49,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 00:53:49,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 00:53:49,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,208 INFO L175 MemorySlicer]: Split 124 memory accesses to 13 slices as follows [2, 5, 16, 10, 10, 8, 14, 24, 8, 7, 8, 7, 5]. 19 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 15 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1]. [2024-11-19 00:53:49,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,209 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 00:53:49,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 00:53:49,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 00:53:49,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 00:53:49,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (1/1) ... [2024-11-19 00:53:49,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:53:49,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:53:49,300 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) [2024-11-19 00:53:49,306 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 [2024-11-19 00:53:49,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 00:53:49,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 00:53:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 00:53:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 00:53:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 00:53:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 00:53:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 00:53:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-19 00:53:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-19 00:53:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-19 00:53:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-19 00:53:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-19 00:53:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-19 00:53:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-19 00:53:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 00:53:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 00:53:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 00:53:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 00:53:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 00:53:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 00:53:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-19 00:53:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-19 00:53:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-19 00:53:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-19 00:53:49,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-19 00:53:49,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-19 00:53:49,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-19 00:53:49,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 00:53:49,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 00:53:49,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 00:53:49,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 00:53:49,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 00:53:49,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 00:53:49,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 00:53:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 00:53:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 00:53:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 00:53:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-19 00:53:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-19 00:53:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-19 00:53:49,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-19 00:53:49,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-19 00:53:49,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 00:53:49,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 00:53:49,473 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 00:53:49,477 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 00:53:49,848 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-11-19 00:53:49,848 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 00:53:49,860 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 00:53:49,861 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 00:53:49,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:53:49 BoogieIcfgContainer [2024-11-19 00:53:49,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 00:53:49,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 00:53:49,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 00:53:49,869 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 00:53:49,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 12:53:48" (1/3) ... [2024-11-19 00:53:49,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172be498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:53:49, skipping insertion in model container [2024-11-19 00:53:49,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:53:49" (2/3) ... [2024-11-19 00:53:49,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172be498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:53:49, skipping insertion in model container [2024-11-19 00:53:49,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:53:49" (3/3) ... [2024-11-19 00:53:49,875 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-19.i [2024-11-19 00:53:49,888 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 00:53:49,889 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 00:53:49,983 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 00:53:50,004 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;@69bf218, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 00:53:50,004 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 00:53:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 83 states have internal predecessors, (114), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 00:53:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-19 00:53:50,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:53:50,022 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:53:50,022 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:53:50,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:53:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 864698559, now seen corresponding path program 1 times [2024-11-19 00:53:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:53:50,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079368577] [2024-11-19 00:53:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:53:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-19 00:53:50,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:53:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079368577] [2024-11-19 00:53:50,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079368577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:53:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784159055] [2024-11-19 00:53:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:50,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:53:50,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:53:50,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:53:50,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 00:53:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:50,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 00:53:50,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:53:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-19 00:53:50,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:53:50,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784159055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:53:50,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:53:50,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 00:53:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519372939] [2024-11-19 00:53:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:53:50,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 00:53:50,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:53:50,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 00:53:50,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:53:50,549 INFO L87 Difference]: Start difference. First operand has 102 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 83 states have internal predecessors, (114), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 00:53:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:53:50,578 INFO L93 Difference]: Finished difference Result 197 states and 307 transitions. [2024-11-19 00:53:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 00:53:50,580 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2024-11-19 00:53:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:53:50,586 INFO L225 Difference]: With dead ends: 197 [2024-11-19 00:53:50,586 INFO L226 Difference]: Without dead ends: 98 [2024-11-19 00:53:50,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:53:50,591 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:53:50,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:53:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-19 00:53:50,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-19 00:53:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 00:53:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2024-11-19 00:53:50,629 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 132 [2024-11-19 00:53:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:53:50,629 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2024-11-19 00:53:50,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 00:53:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2024-11-19 00:53:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-19 00:53:50,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:53:50,633 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:53:50,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 00:53:50,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 00:53:50,834 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:53:50,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:53:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1949528607, now seen corresponding path program 1 times [2024-11-19 00:53:50,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:53:50,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251911891] [2024-11-19 00:53:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:50,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:53:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 00:53:51,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:53:51,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251911891] [2024-11-19 00:53:51,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251911891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:53:51,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:53:51,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:53:51,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392275659] [2024-11-19 00:53:51,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:53:51,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:53:51,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:53:51,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:53:51,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:53:51,158 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:53:51,201 INFO L93 Difference]: Finished difference Result 196 states and 279 transitions. [2024-11-19 00:53:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:53:51,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2024-11-19 00:53:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:53:51,203 INFO L225 Difference]: With dead ends: 196 [2024-11-19 00:53:51,204 INFO L226 Difference]: Without dead ends: 101 [2024-11-19 00:53:51,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:53:51,205 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 1 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:53:51,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 399 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:53:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-19 00:53:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2024-11-19 00:53:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 81 states have internal predecessors, (107), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 00:53:51,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 141 transitions. [2024-11-19 00:53:51,220 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 141 transitions. Word has length 132 [2024-11-19 00:53:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:53:51,223 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 141 transitions. [2024-11-19 00:53:51,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 141 transitions. [2024-11-19 00:53:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-19 00:53:51,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:53:51,227 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:53:51,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 00:53:51,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:53:51,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:53:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1947681565, now seen corresponding path program 1 times [2024-11-19 00:53:51,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:53:51,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874670570] [2024-11-19 00:53:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:53:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-19 00:53:52,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:53:52,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874670570] [2024-11-19 00:53:52,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874670570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:53:52,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135970164] [2024-11-19 00:53:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:52,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:53:52,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:53:52,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:53:52,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 00:53:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:52,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 00:53:52,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:53:53,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-19 00:53:53,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 00:53:53,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 171 [2024-11-19 00:53:53,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 115 [2024-11-19 00:53:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-19 00:53:53,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:53:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 00:53:53,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135970164] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 00:53:53,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 00:53:53,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 7] total 16 [2024-11-19 00:53:53,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5901536] [2024-11-19 00:53:53,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:53:53,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:53:53,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:53:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:53:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-19 00:53:53,453 INFO L87 Difference]: Start difference. First operand 100 states and 141 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:53:53,598 INFO L93 Difference]: Finished difference Result 258 states and 361 transitions. [2024-11-19 00:53:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 00:53:53,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2024-11-19 00:53:53,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:53:53,604 INFO L225 Difference]: With dead ends: 258 [2024-11-19 00:53:53,604 INFO L226 Difference]: Without dead ends: 161 [2024-11-19 00:53:53,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-19 00:53:53,606 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 70 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:53:53,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 807 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:53:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-19 00:53:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 158. [2024-11-19 00:53:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 132 states have (on average 1.3106060606060606) internal successors, (173), 133 states have internal predecessors, (173), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-19 00:53:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 219 transitions. [2024-11-19 00:53:53,618 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 219 transitions. Word has length 132 [2024-11-19 00:53:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:53:53,618 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 219 transitions. [2024-11-19 00:53:53,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 219 transitions. [2024-11-19 00:53:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-19 00:53:53,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:53:53,620 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:53:53,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 00:53:53,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 00:53:53,825 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:53:53,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:53:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 758937829, now seen corresponding path program 1 times [2024-11-19 00:53:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:53:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631274216] [2024-11-19 00:53:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:53:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 00:53:54,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:53:54,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631274216] [2024-11-19 00:53:54,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631274216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:53:54,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:53:54,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:53:54,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087426092] [2024-11-19 00:53:54,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:53:54,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:53:54,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:53:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:53:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:53:54,084 INFO L87 Difference]: Start difference. First operand 158 states and 219 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:53:54,265 INFO L93 Difference]: Finished difference Result 383 states and 530 transitions. [2024-11-19 00:53:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:53:54,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2024-11-19 00:53:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:53:54,271 INFO L225 Difference]: With dead ends: 383 [2024-11-19 00:53:54,271 INFO L226 Difference]: Without dead ends: 228 [2024-11-19 00:53:54,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:53:54,274 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 86 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:53:54,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 756 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:53:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-19 00:53:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2024-11-19 00:53:54,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 186 states have (on average 1.2956989247311828) internal successors, (241), 188 states have internal predecessors, (241), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-19 00:53:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 311 transitions. [2024-11-19 00:53:54,302 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 311 transitions. Word has length 132 [2024-11-19 00:53:54,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:53:54,302 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 311 transitions. [2024-11-19 00:53:54,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 311 transitions. [2024-11-19 00:53:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-19 00:53:54,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:53:54,303 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:53:54,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 00:53:54,304 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:53:54,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:53:54,304 INFO L85 PathProgramCache]: Analyzing trace with hash 989841298, now seen corresponding path program 1 times [2024-11-19 00:53:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:53:54,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905562335] [2024-11-19 00:53:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:54,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:53:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 00:53:54,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:53:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905562335] [2024-11-19 00:53:54,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905562335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:53:54,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:53:54,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:53:54,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119861886] [2024-11-19 00:53:54,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:53:54,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:53:54,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:53:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:53:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:53:54,627 INFO L87 Difference]: Start difference. First operand 225 states and 311 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:54,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:53:54,803 INFO L93 Difference]: Finished difference Result 519 states and 713 transitions. [2024-11-19 00:53:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:53:54,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2024-11-19 00:53:54,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:53:54,805 INFO L225 Difference]: With dead ends: 519 [2024-11-19 00:53:54,805 INFO L226 Difference]: Without dead ends: 297 [2024-11-19 00:53:54,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:53:54,807 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 47 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:53:54,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 876 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:53:54,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-19 00:53:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 237. [2024-11-19 00:53:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 198 states have (on average 1.297979797979798) internal successors, (257), 200 states have internal predecessors, (257), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-19 00:53:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 327 transitions. [2024-11-19 00:53:54,833 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 327 transitions. Word has length 133 [2024-11-19 00:53:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:53:54,833 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 327 transitions. [2024-11-19 00:53:54,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 327 transitions. [2024-11-19 00:53:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-19 00:53:54,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:53:54,835 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:53:54,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 00:53:54,835 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:53:54,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:53:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash 754293936, now seen corresponding path program 1 times [2024-11-19 00:53:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:53:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67438374] [2024-11-19 00:53:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:54,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:53:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 00:53:55,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:53:55,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67438374] [2024-11-19 00:53:55,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67438374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:53:55,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:53:55,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:53:55,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285259823] [2024-11-19 00:53:55,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:53:55,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:53:55,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:53:55,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:53:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:53:55,392 INFO L87 Difference]: Start difference. First operand 237 states and 327 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-19 00:53:55,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:53:55,876 INFO L93 Difference]: Finished difference Result 582 states and 800 transitions. [2024-11-19 00:53:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 00:53:55,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 134 [2024-11-19 00:53:55,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:53:55,879 INFO L225 Difference]: With dead ends: 582 [2024-11-19 00:53:55,879 INFO L226 Difference]: Without dead ends: 344 [2024-11-19 00:53:55,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:53:55,880 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 198 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:53:55,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1045 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:53:55,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-19 00:53:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 258. [2024-11-19 00:53:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 219 states have (on average 1.3013698630136987) internal successors, (285), 221 states have internal predecessors, (285), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-19 00:53:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 355 transitions. [2024-11-19 00:53:55,894 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 355 transitions. Word has length 134 [2024-11-19 00:53:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:53:55,895 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 355 transitions. [2024-11-19 00:53:55,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-19 00:53:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 355 transitions. [2024-11-19 00:53:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-19 00:53:55,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:53:55,896 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:53:55,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 00:53:55,897 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:53:55,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:53:55,897 INFO L85 PathProgramCache]: Analyzing trace with hash 264342387, now seen corresponding path program 1 times [2024-11-19 00:53:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:53:55,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166622710] [2024-11-19 00:53:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:55,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:53:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 00:53:56,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:53:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166622710] [2024-11-19 00:53:56,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166622710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:53:56,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:53:56,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:53:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433283418] [2024-11-19 00:53:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:53:56,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:53:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:53:56,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:53:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:53:56,466 INFO L87 Difference]: Start difference. First operand 258 states and 355 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:56,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:53:56,635 INFO L93 Difference]: Finished difference Result 613 states and 841 transitions. [2024-11-19 00:53:56,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:53:56,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 134 [2024-11-19 00:53:56,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:53:56,637 INFO L225 Difference]: With dead ends: 613 [2024-11-19 00:53:56,637 INFO L226 Difference]: Without dead ends: 358 [2024-11-19 00:53:56,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:53:56,638 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 62 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:53:56,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 764 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:53:56,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-19 00:53:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 254. [2024-11-19 00:53:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 215 states have (on average 1.2930232558139534) internal successors, (278), 217 states have internal predecessors, (278), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-19 00:53:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 348 transitions. [2024-11-19 00:53:56,671 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 348 transitions. Word has length 134 [2024-11-19 00:53:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:53:56,671 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 348 transitions. [2024-11-19 00:53:56,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 348 transitions. [2024-11-19 00:53:56,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 00:53:56,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:53:56,672 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:53:56,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 00:53:56,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:53:56,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:53:56,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1148264091, now seen corresponding path program 1 times [2024-11-19 00:53:56,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:53:56,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340758398] [2024-11-19 00:53:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:56,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:53:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:53:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 00:53:56,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:53:56,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340758398] [2024-11-19 00:53:56,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340758398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:53:56,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:53:56,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:53:56,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583084249] [2024-11-19 00:53:56,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:53:56,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:53:56,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:53:56,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:53:56,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:53:56,820 INFO L87 Difference]: Start difference. First operand 254 states and 348 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:53:56,949 INFO L93 Difference]: Finished difference Result 584 states and 799 transitions. [2024-11-19 00:53:56,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:53:56,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-19 00:53:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:53:56,951 INFO L225 Difference]: With dead ends: 584 [2024-11-19 00:53:56,951 INFO L226 Difference]: Without dead ends: 333 [2024-11-19 00:53:56,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:53:56,954 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 86 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:53:56,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 614 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:53:56,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-19 00:53:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 330. [2024-11-19 00:53:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 280 states have (on average 1.2892857142857144) internal successors, (361), 283 states have internal predecessors, (361), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-19 00:53:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 451 transitions. [2024-11-19 00:53:56,971 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 451 transitions. Word has length 135 [2024-11-19 00:53:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:53:56,972 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 451 transitions. [2024-11-19 00:53:56,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:53:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 451 transitions. [2024-11-19 00:53:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 00:53:56,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:53:56,973 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:53:56,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 00:53:56,973 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:53:56,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:53:56,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1735070105, now seen corresponding path program 1 times [2024-11-19 00:53:56,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:53:56,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661992880] [2024-11-19 00:53:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:53:56,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:53:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:54:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-19 00:54:03,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:54:03,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661992880] [2024-11-19 00:54:03,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661992880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:54:03,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663473124] [2024-11-19 00:54:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:54:03,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:54:03,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:54:03,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:54:03,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 00:54:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:54:04,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 00:54:04,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:54:04,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-19 00:54:04,594 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-11-19 00:54:04,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 74 [2024-11-19 00:54:04,654 INFO L349 Elim1Store]: treesize reduction 44, result has 17.0 percent of original size [2024-11-19 00:54:04,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 89 [2024-11-19 00:54:04,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-19 00:54:04,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2024-11-19 00:54:04,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2024-11-19 00:54:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-19 00:54:05,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:54:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 00:54:05,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663473124] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 00:54:05,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 00:54:05,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [21, 9] total 29 [2024-11-19 00:54:05,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469748066] [2024-11-19 00:54:05,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:54:05,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:54:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:54:05,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:54:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2024-11-19 00:54:05,203 INFO L87 Difference]: Start difference. First operand 330 states and 451 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:54:05,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:54:05,450 INFO L93 Difference]: Finished difference Result 783 states and 1061 transitions. [2024-11-19 00:54:05,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:54:05,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-19 00:54:05,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:54:05,453 INFO L225 Difference]: With dead ends: 783 [2024-11-19 00:54:05,453 INFO L226 Difference]: Without dead ends: 456 [2024-11-19 00:54:05,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 00:54:05,454 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 72 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:54:05,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1088 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:54:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-19 00:54:05,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 448. [2024-11-19 00:54:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 388 states have (on average 1.2835051546391754) internal successors, (498), 393 states have internal predecessors, (498), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 48 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-19 00:54:05,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 604 transitions. [2024-11-19 00:54:05,467 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 604 transitions. Word has length 135 [2024-11-19 00:54:05,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:54:05,468 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 604 transitions. [2024-11-19 00:54:05,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:54:05,468 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 604 transitions. [2024-11-19 00:54:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 00:54:05,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:54:05,469 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:54:05,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 00:54:05,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:54:05,670 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:54:05,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:54:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1874819568, now seen corresponding path program 1 times [2024-11-19 00:54:05,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:54:05,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388504189] [2024-11-19 00:54:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:54:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:54:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:54:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 00:54:06,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:54:06,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388504189] [2024-11-19 00:54:06,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388504189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:54:06,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:54:06,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:54:06,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518894699] [2024-11-19 00:54:06,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:54:06,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:54:06,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:54:06,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:54:06,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:54:06,308 INFO L87 Difference]: Start difference. First operand 448 states and 604 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:54:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:54:06,486 INFO L93 Difference]: Finished difference Result 1079 states and 1453 transitions. [2024-11-19 00:54:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:54:06,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 135 [2024-11-19 00:54:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:54:06,492 INFO L225 Difference]: With dead ends: 1079 [2024-11-19 00:54:06,492 INFO L226 Difference]: Without dead ends: 629 [2024-11-19 00:54:06,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:54:06,493 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 57 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:54:06,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 510 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:54:06,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-19 00:54:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 441. [2024-11-19 00:54:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 381 states have (on average 1.2677165354330708) internal successors, (483), 386 states have internal predecessors, (483), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 48 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-19 00:54:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 589 transitions. [2024-11-19 00:54:06,524 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 589 transitions. Word has length 135 [2024-11-19 00:54:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:54:06,524 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 589 transitions. [2024-11-19 00:54:06,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 00:54:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 589 transitions. [2024-11-19 00:54:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 00:54:06,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:54:06,529 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:54:06,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 00:54:06,529 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:54:06,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:54:06,530 INFO L85 PathProgramCache]: Analyzing trace with hash -205276233, now seen corresponding path program 1 times [2024-11-19 00:54:06,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:54:06,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125304087] [2024-11-19 00:54:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:54:06,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:54:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:54:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-19 00:54:07,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:54:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125304087] [2024-11-19 00:54:07,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125304087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:54:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773457914] [2024-11-19 00:54:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:54:07,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:54:07,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:54:07,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:54:07,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 00:54:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:54:07,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 00:54:07,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:54:07,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 00:54:07,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 00:54:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 6 proven. 298 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-19 00:54:07,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:54:07,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-11-19 00:54:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-19 00:54:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773457914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:54:07,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:54:07,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 16 [2024-11-19 00:54:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608318453] [2024-11-19 00:54:07,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:54:08,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 00:54:08,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:54:08,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 00:54:08,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-19 00:54:08,001 INFO L87 Difference]: Start difference. First operand 441 states and 589 transitions. Second operand has 16 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 7 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (51), 5 states have call predecessors, (51), 7 states have call successors, (51) [2024-11-19 00:54:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:54:08,451 INFO L93 Difference]: Finished difference Result 899 states and 1193 transitions. [2024-11-19 00:54:08,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 00:54:08,452 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 7 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (51), 5 states have call predecessors, (51), 7 states have call successors, (51) Word has length 135 [2024-11-19 00:54:08,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:54:08,454 INFO L225 Difference]: With dead ends: 899 [2024-11-19 00:54:08,454 INFO L226 Difference]: Without dead ends: 461 [2024-11-19 00:54:08,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 262 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2024-11-19 00:54:08,458 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 389 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:54:08,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 506 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:54:08,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-11-19 00:54:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 449. [2024-11-19 00:54:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 387 states have (on average 1.2532299741602067) internal successors, (485), 392 states have internal predecessors, (485), 53 states have call successors, (53), 8 states have call predecessors, (53), 8 states have return successors, (53), 48 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-19 00:54:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 591 transitions. [2024-11-19 00:54:08,479 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 591 transitions. Word has length 135 [2024-11-19 00:54:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:54:08,479 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 591 transitions. [2024-11-19 00:54:08,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 7 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (51), 5 states have call predecessors, (51), 7 states have call successors, (51) [2024-11-19 00:54:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 591 transitions. [2024-11-19 00:54:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 00:54:08,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:54:08,482 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:54:08,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 00:54:08,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:54:08,683 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:54:08,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:54:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash -792082247, now seen corresponding path program 1 times [2024-11-19 00:54:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:54:08,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409274207] [2024-11-19 00:54:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:54:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:54:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:54:08,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437255312] [2024-11-19 00:54:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:54:08,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:54:08,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:54:08,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:54:08,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 00:54:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:54:10,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 155 conjuncts are in the unsatisfiable core [2024-11-19 00:54:10,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:54:10,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 00:54:11,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-19 00:54:12,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 00:54:13,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 00:54:14,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-19 00:54:14,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 00:54:15,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 00:54:17,112 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-19 00:54:17,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 40 [2024-11-19 00:54:17,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-19 00:54:17,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-19 00:54:17,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 59 [2024-11-19 00:54:17,493 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-19 00:54:17,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2024-11-19 00:54:18,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 58 [2024-11-19 00:54:18,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2024-11-19 00:54:26,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 33 [2024-11-19 00:54:26,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 00:54:27,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-19 00:54:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 34 proven. 482 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 00:54:27,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:54:33,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 100 [2024-11-19 00:54:34,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:54:34,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409274207] [2024-11-19 00:54:34,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:54:34,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437255312] [2024-11-19 00:54:34,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437255312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:54:34,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:54:34,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2024-11-19 00:54:34,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514683888] [2024-11-19 00:54:34,209 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 00:54:34,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-19 00:54:34,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:54:34,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-19 00:54:34,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=3889, Unknown=11, NotChecked=0, Total=4160 [2024-11-19 00:54:34,212 INFO L87 Difference]: Start difference. First operand 449 states and 591 transitions. Second operand has 47 states, 42 states have (on average 2.119047619047619) internal successors, (89), 40 states have internal predecessors, (89), 13 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (17), 11 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-19 00:54:48,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 00:54:53,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 00:54:54,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 00:54:58,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 00:55:08,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 00:55:12,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 00:55:15,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 00:55:16,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]