./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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-s_file-12.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 26d5f48c3aaa4f87ce3b022933cd3bb4d238eb5e6d3164b471af63fd7f3cd88c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 09:43:41,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 09:43:41,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 09:43:41,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 09:43:41,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 09:43:41,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 09:43:41,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 09:43:41,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 09:43:41,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 09:43:41,899 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 09:43:41,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 09:43:41,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 09:43:41,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 09:43:41,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 09:43:41,901 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 09:43:41,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 09:43:41,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 09:43:41,902 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 09:43:41,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 09:43:41,902 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 09:43:41,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 09:43:41,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 09:43:41,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 09:43:41,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 09:43:41,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 09:43:41,907 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 09:43:41,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 09:43:41,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 09:43:41,907 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 09:43:41,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 09:43:41,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 09:43:41,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 09:43:41,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 09:43:41,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 09:43:41,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 09:43:41,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 09:43:41,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 09:43:41,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 09:43:41,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 09:43:41,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 09:43:41,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 09:43:41,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 09:43:41,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d5f48c3aaa4f87ce3b022933cd3bb4d238eb5e6d3164b471af63fd7f3cd88c [2024-11-10 09:43:42,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 09:43:42,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 09:43:42,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 09:43:42,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 09:43:42,176 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 09:43:42,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i [2024-11-10 09:43:43,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 09:43:43,947 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 09:43:43,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i [2024-11-10 09:43:43,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09a534b8b/a00630969e334be7b3b9f862ec21f26a/FLAG0cfd3b828 [2024-11-10 09:43:43,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09a534b8b/a00630969e334be7b3b9f862ec21f26a [2024-11-10 09:43:43,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 09:43:43,985 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 09:43:43,987 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 09:43:43,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 09:43:43,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 09:43:43,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:43:43" (1/1) ... [2024-11-10 09:43:43,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8d3e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:43, skipping insertion in model container [2024-11-10 09:43:43,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:43:43" (1/1) ... [2024-11-10 09:43:44,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 09:43:44,208 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-s_file-12.i[916,929] [2024-11-10 09:43:44,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 09:43:44,307 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 09:43:44,320 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-s_file-12.i[916,929] [2024-11-10 09:43:44,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 09:43:44,400 INFO L204 MainTranslator]: Completed translation [2024-11-10 09:43:44,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44 WrapperNode [2024-11-10 09:43:44,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 09:43:44,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 09:43:44,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 09:43:44,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 09:43:44,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,481 INFO L138 Inliner]: procedures = 27, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 443 [2024-11-10 09:43:44,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 09:43:44,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 09:43:44,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 09:43:44,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 09:43:44,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,500 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,529 INFO L175 MemorySlicer]: Split 124 memory accesses to 2 slices as follows [2, 122]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 26 writes are split as follows [0, 26]. [2024-11-10 09:43:44,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,560 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 09:43:44,577 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 09:43:44,577 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 09:43:44,577 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 09:43:44,579 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (1/1) ... [2024-11-10 09:43:44,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 09:43:44,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 09:43:44,615 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) [2024-11-10 09:43:44,618 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 [2024-11-10 09:43:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 09:43:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-10 09:43:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-10 09:43:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 09:43:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 09:43:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 09:43:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 09:43:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-10 09:43:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-10 09:43:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 09:43:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 09:43:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 09:43:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 09:43:44,817 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 09:43:44,819 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 09:43:45,341 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L108: havoc property_#t~mem71#1;havoc property_#t~ite82#1;havoc property_#t~mem72#1;havoc property_#t~mem73#1;havoc property_#t~ite81#1;havoc property_#t~mem74#1;havoc property_#t~mem75#1;havoc property_#t~ite78#1;havoc property_#t~mem77#1;havoc property_#t~mem76#1;havoc property_#t~mem80#1;havoc property_#t~mem79#1;havoc property_#t~mem83#1;havoc property_#t~mem84#1;havoc property_#t~ite105#1;havoc property_#t~mem104#1;havoc property_#t~mem90#1;havoc property_#t~mem85#1;havoc property_#t~mem86#1;havoc property_#t~ite89#1;havoc property_#t~mem87#1;havoc property_#t~mem88#1;havoc property_#t~ite103#1;havoc property_#t~mem96#1;havoc property_#t~mem91#1;havoc property_#t~mem92#1;havoc property_#t~ite95#1;havoc property_#t~mem93#1;havoc property_#t~mem94#1;havoc property_#t~mem102#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~ite101#1;havoc property_#t~mem99#1;havoc property_#t~mem100#1;havoc property_#t~short106#1;havoc property_#t~mem109#1;havoc property_#t~mem107#1;havoc property_#t~mem108#1;havoc property_#t~mem110#1;havoc property_#t~ite126#1;havoc property_#t~mem111#1;havoc property_#t~mem114#1;havoc property_#t~mem112#1;havoc property_#t~mem113#1;havoc property_#t~ite123#1;havoc property_#t~mem120#1;havoc property_#t~mem118#1;havoc property_#t~mem115#1;havoc property_#t~mem116#1;havoc property_#t~short117#1;havoc property_#t~short119#1;havoc property_#t~mem122#1;havoc property_#t~mem121#1;havoc property_#t~mem125#1;havoc property_#t~mem124#1;havoc property_#t~short127#1; [2024-11-10 09:43:45,419 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-10 09:43:45,419 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 09:43:45,436 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 09:43:45,437 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 09:43:45,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 09:43:45 BoogieIcfgContainer [2024-11-10 09:43:45,438 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 09:43:45,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 09:43:45,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 09:43:45,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 09:43:45,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 09:43:43" (1/3) ... [2024-11-10 09:43:45,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b52fbae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:43:45, skipping insertion in model container [2024-11-10 09:43:45,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:43:44" (2/3) ... [2024-11-10 09:43:45,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b52fbae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:43:45, skipping insertion in model container [2024-11-10 09:43:45,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 09:43:45" (3/3) ... [2024-11-10 09:43:45,449 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-12.i [2024-11-10 09:43:45,465 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 09:43:45,466 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 09:43:45,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 09:43:45,583 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;@40a7e57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 09:43:45,583 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 09:43:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 82 states have (on average 1.3780487804878048) internal successors, (113), 83 states have internal predecessors, (113), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 09:43:45,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-10 09:43:45,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:43:45,600 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:43:45,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:43:45,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:43:45,606 INFO L85 PathProgramCache]: Analyzing trace with hash 934528471, now seen corresponding path program 1 times [2024-11-10 09:43:45,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:43:45,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226845292] [2024-11-10 09:43:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:43:45,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:43:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:45,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:43:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:45,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:43:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:45,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:43:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:45,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:43:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:45,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:43:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:45,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:43:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:45,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:43:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:45,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:43:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:45,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:43:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:43:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:43:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:43:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:43:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:43:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:43:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:43:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:43:46,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:43:46,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226845292] [2024-11-10 09:43:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226845292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 09:43:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 09:43:46,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 09:43:46,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511116017] [2024-11-10 09:43:46,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:43:46,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 09:43:46,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:43:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 09:43:46,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 09:43:46,095 INFO L87 Difference]: Start difference. First operand has 101 states, 82 states have (on average 1.3780487804878048) internal successors, (113), 83 states have internal predecessors, (113), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-10 09:43:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:43:46,135 INFO L93 Difference]: Finished difference Result 188 states and 289 transitions. [2024-11-10 09:43:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 09:43:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 119 [2024-11-10 09:43:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:43:46,147 INFO L225 Difference]: With dead ends: 188 [2024-11-10 09:43:46,147 INFO L226 Difference]: Without dead ends: 90 [2024-11-10 09:43:46,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 09:43:46,154 INFO L432 NwaCegarLoop]: 125 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, 125 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 [2024-11-10 09:43:46,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 09:43:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-10 09:43:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-10 09:43:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 72 states have internal predecessors, (93), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 09:43:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 125 transitions. [2024-11-10 09:43:46,194 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 125 transitions. Word has length 119 [2024-11-10 09:43:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:43:46,195 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 125 transitions. [2024-11-10 09:43:46,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-10 09:43:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 125 transitions. [2024-11-10 09:43:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-10 09:43:46,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:43:46,202 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:43:46,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 09:43:46,203 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:43:46,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:43:46,204 INFO L85 PathProgramCache]: Analyzing trace with hash 110814183, now seen corresponding path program 1 times [2024-11-10 09:43:46,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:43:46,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179922314] [2024-11-10 09:43:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:43:46,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:43:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:43:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:43:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:43:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:43:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:43:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:43:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:43:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:43:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:43:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:43:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:43:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:43:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:43:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:43:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:43:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:43:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:43:46,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:43:46,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179922314] [2024-11-10 09:43:46,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179922314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 09:43:46,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 09:43:46,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 09:43:46,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735944196] [2024-11-10 09:43:46,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:43:46,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 09:43:46,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:43:46,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 09:43:46,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 09:43:46,683 INFO L87 Difference]: Start difference. First operand 90 states and 125 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:43:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:43:46,721 INFO L93 Difference]: Finished difference Result 177 states and 247 transitions. [2024-11-10 09:43:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 09:43:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-11-10 09:43:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:43:46,725 INFO L225 Difference]: With dead ends: 177 [2024-11-10 09:43:46,725 INFO L226 Difference]: Without dead ends: 90 [2024-11-10 09:43:46,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 09:43:46,727 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 09:43:46,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 09:43:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-10 09:43:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-10 09:43:46,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 72 states have internal predecessors, (92), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 09:43:46,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 124 transitions. [2024-11-10 09:43:46,746 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 124 transitions. Word has length 119 [2024-11-10 09:43:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:43:46,748 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 124 transitions. [2024-11-10 09:43:46,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:43:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 124 transitions. [2024-11-10 09:43:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-10 09:43:46,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:43:46,752 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:43:46,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 09:43:46,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:43:46,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:43:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash -110086315, now seen corresponding path program 1 times [2024-11-10 09:43:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:43:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036678219] [2024-11-10 09:43:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:43:46,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:43:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:43:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:43:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:43:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:43:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:43:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:43:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:43:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:43:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:43:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:43:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:43:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:43:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:43:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:43:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:43:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:43:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:43:47,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:43:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036678219] [2024-11-10 09:43:47,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036678219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 09:43:47,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 09:43:47,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 09:43:47,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518277453] [2024-11-10 09:43:47,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:43:47,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 09:43:47,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:43:47,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 09:43:47,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 09:43:47,094 INFO L87 Difference]: Start difference. First operand 90 states and 124 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:43:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:43:47,153 INFO L93 Difference]: Finished difference Result 180 states and 249 transitions. [2024-11-10 09:43:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 09:43:47,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2024-11-10 09:43:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:43:47,157 INFO L225 Difference]: With dead ends: 180 [2024-11-10 09:43:47,158 INFO L226 Difference]: Without dead ends: 93 [2024-11-10 09:43:47,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 09:43:47,162 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 09:43:47,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 469 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 09:43:47,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-10 09:43:47,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-10 09:43:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 75 states have internal predecessors, (95), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-10 09:43:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 127 transitions. [2024-11-10 09:43:47,182 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 127 transitions. Word has length 121 [2024-11-10 09:43:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:43:47,185 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 127 transitions. [2024-11-10 09:43:47,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:43:47,185 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 127 transitions. [2024-11-10 09:43:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-10 09:43:47,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:43:47,190 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:43:47,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 09:43:47,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:43:47,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:43:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2017758689, now seen corresponding path program 1 times [2024-11-10 09:43:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:43:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888861139] [2024-11-10 09:43:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:43:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:43:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:43:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:43:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:43:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:43:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:43:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:43:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:43:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:43:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:43:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:43:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:43:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:43:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:43:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:43:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:43:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:43:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:43:48,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:43:48,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888861139] [2024-11-10 09:43:48,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888861139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 09:43:48,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 09:43:48,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 09:43:48,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593103335] [2024-11-10 09:43:48,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:43:48,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 09:43:48,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:43:48,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 09:43:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-10 09:43:48,393 INFO L87 Difference]: Start difference. First operand 93 states and 127 transitions. Second operand has 9 states, 7 states have (on average 6.571428571428571) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-10 09:43:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:43:48,997 INFO L93 Difference]: Finished difference Result 170 states and 227 transitions. [2024-11-10 09:43:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 09:43:48,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.571428571428571) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2024-11-10 09:43:48,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:43:49,000 INFO L225 Difference]: With dead ends: 170 [2024-11-10 09:43:49,003 INFO L226 Difference]: Without dead ends: 167 [2024-11-10 09:43:49,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-10 09:43:49,005 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 76 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 09:43:49,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 876 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 09:43:49,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-10 09:43:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2024-11-10 09:43:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 130 states have (on average 1.2384615384615385) internal successors, (161), 131 states have internal predecessors, (161), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-10 09:43:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 221 transitions. [2024-11-10 09:43:49,037 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 221 transitions. Word has length 123 [2024-11-10 09:43:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:43:49,038 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 221 transitions. [2024-11-10 09:43:49,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.571428571428571) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-10 09:43:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 221 transitions. [2024-11-10 09:43:49,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-10 09:43:49,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:43:49,044 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:43:49,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 09:43:49,044 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:43:49,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:43:49,045 INFO L85 PathProgramCache]: Analyzing trace with hash 719159210, now seen corresponding path program 1 times [2024-11-10 09:43:49,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:43:49,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538929079] [2024-11-10 09:43:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:43:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:43:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:43:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:43:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:43:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:43:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:43:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:43:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:43:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:43:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:43:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:43:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:43:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:43:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:43:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:43:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:43:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:43:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-10 09:43:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:43:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538929079] [2024-11-10 09:43:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538929079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 09:43:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292274253] [2024-11-10 09:43:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:43:50,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:43:50,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 09:43:50,929 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) [2024-11-10 09:43:50,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 09:43:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:51,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-10 09:43:51,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 09:43:51,380 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 33 treesize of output 17 [2024-11-10 09:43:51,426 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 33 treesize of output 17 [2024-11-10 09:43:51,470 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 33 treesize of output 17 [2024-11-10 09:43:51,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-10 09:43:51,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 09:43:51,991 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 1 case distinctions, treesize of input 44 treesize of output 40 [2024-11-10 09:43:52,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 09:43:52,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 36 [2024-11-10 09:43:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-10 09:43:52,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 09:43:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-10 09:43:53,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292274253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 09:43:53,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 09:43:53,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 51 [2024-11-10 09:43:53,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770375484] [2024-11-10 09:43:53,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 09:43:53,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-10 09:43:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:43:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-10 09:43:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2143, Unknown=0, NotChecked=0, Total=2550 [2024-11-10 09:43:53,618 INFO L87 Difference]: Start difference. First operand 163 states and 221 transitions. Second operand has 51 states, 40 states have (on average 2.975) internal successors, (119), 47 states have internal predecessors, (119), 13 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 13 states have call successors, (29) [2024-11-10 09:43:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:43:56,978 INFO L93 Difference]: Finished difference Result 295 states and 365 transitions. [2024-11-10 09:43:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-10 09:43:56,978 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 40 states have (on average 2.975) internal successors, (119), 47 states have internal predecessors, (119), 13 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 13 states have call successors, (29) Word has length 124 [2024-11-10 09:43:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:43:56,982 INFO L225 Difference]: With dead ends: 295 [2024-11-10 09:43:56,982 INFO L226 Difference]: Without dead ends: 292 [2024-11-10 09:43:56,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 246 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1374, Invalid=6108, Unknown=0, NotChecked=0, Total=7482 [2024-11-10 09:43:56,986 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 506 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-10 09:43:56,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1395 Invalid, 3570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 3421 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-10 09:43:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-10 09:43:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 191. [2024-11-10 09:43:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 151 states have (on average 1.205298013245033) internal successors, (182), 152 states have internal predecessors, (182), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-10 09:43:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 242 transitions. [2024-11-10 09:43:57,025 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 242 transitions. Word has length 124 [2024-11-10 09:43:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:43:57,026 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 242 transitions. [2024-11-10 09:43:57,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 40 states have (on average 2.975) internal successors, (119), 47 states have internal predecessors, (119), 13 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 13 states have call successors, (29) [2024-11-10 09:43:57,027 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 242 transitions. [2024-11-10 09:43:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-10 09:43:57,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:43:57,030 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:43:57,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 09:43:57,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:43:57,235 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:43:57,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:43:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash -52006248, now seen corresponding path program 1 times [2024-11-10 09:43:57,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:43:57,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592521223] [2024-11-10 09:43:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:43:57,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:43:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:43:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:43:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:43:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:43:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:43:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:43:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:43:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:43:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:43:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:43:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:43:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:43:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:43:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:43:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:43:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:43:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-10 09:43:58,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:43:58,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592521223] [2024-11-10 09:43:58,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592521223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 09:43:58,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228082513] [2024-11-10 09:43:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:43:58,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:43:58,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 09:43:58,742 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) [2024-11-10 09:43:58,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 09:43:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:43:58,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-10 09:43:58,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 09:43:59,093 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 33 treesize of output 17 [2024-11-10 09:43:59,125 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 33 treesize of output 17 [2024-11-10 09:43:59,156 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 33 treesize of output 17 [2024-11-10 09:43:59,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-10 09:43:59,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 09:43:59,537 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 1 case distinctions, treesize of input 44 treesize of output 40 [2024-11-10 09:43:59,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 09:43:59,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 36 [2024-11-10 09:43:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-10 09:43:59,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 09:44:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-10 09:44:00,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228082513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 09:44:00,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 09:44:00,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 26] total 52 [2024-11-10 09:44:00,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012542447] [2024-11-10 09:44:00,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 09:44:00,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-10 09:44:00,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:44:00,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-10 09:44:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2240, Unknown=0, NotChecked=0, Total=2652 [2024-11-10 09:44:00,907 INFO L87 Difference]: Start difference. First operand 191 states and 242 transitions. Second operand has 52 states, 42 states have (on average 2.857142857142857) internal successors, (120), 48 states have internal predecessors, (120), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2024-11-10 09:44:02,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:44:02,960 INFO L93 Difference]: Finished difference Result 275 states and 341 transitions. [2024-11-10 09:44:02,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-10 09:44:02,961 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 42 states have (on average 2.857142857142857) internal successors, (120), 48 states have internal predecessors, (120), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) Word has length 125 [2024-11-10 09:44:02,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:44:02,962 INFO L225 Difference]: With dead ends: 275 [2024-11-10 09:44:02,962 INFO L226 Difference]: Without dead ends: 272 [2024-11-10 09:44:02,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 247 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1122, Invalid=4730, Unknown=0, NotChecked=0, Total=5852 [2024-11-10 09:44:02,965 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 845 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-10 09:44:02,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 934 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-10 09:44:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-10 09:44:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 192. [2024-11-10 09:44:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 153 states have internal predecessors, (183), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-10 09:44:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 243 transitions. [2024-11-10 09:44:03,002 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 243 transitions. Word has length 125 [2024-11-10 09:44:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:44:03,003 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 243 transitions. [2024-11-10 09:44:03,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 42 states have (on average 2.857142857142857) internal successors, (120), 48 states have internal predecessors, (120), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2024-11-10 09:44:03,003 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 243 transitions. [2024-11-10 09:44:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-10 09:44:03,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:44:03,004 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:44:03,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 09:44:03,205 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,SelfDestructingSolverStorable5 [2024-11-10 09:44:03,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:44:03,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:44:03,207 INFO L85 PathProgramCache]: Analyzing trace with hash 232708592, now seen corresponding path program 1 times [2024-11-10 09:44:03,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:44:03,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910019423] [2024-11-10 09:44:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:03,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:44:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:44:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:44:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:44:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:44:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:44:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:44:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:44:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:44:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:44:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:44:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:44:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:44:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:44:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:44:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:44:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:44:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-10 09:44:03,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:44:03,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910019423] [2024-11-10 09:44:03,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910019423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 09:44:03,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269114447] [2024-11-10 09:44:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:03,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:44:03,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 09:44:03,780 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) [2024-11-10 09:44:03,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 09:44:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:03,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 09:44:03,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 09:44:03,955 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 31 treesize of output 15 [2024-11-10 09:44:03,985 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 31 treesize of output 15 [2024-11-10 09:44:04,015 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 31 treesize of output 15 [2024-11-10 09:44:04,048 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 31 treesize of output 15 [2024-11-10 09:44:04,083 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 31 treesize of output 15 [2024-11-10 09:44:04,130 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 41 treesize of output 23 [2024-11-10 09:44:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-10 09:44:04,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 09:44:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-10 09:44:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269114447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 09:44:04,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 09:44:04,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-10 09:44:04,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094863512] [2024-11-10 09:44:04,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 09:44:04,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 09:44:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:44:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 09:44:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 09:44:04,350 INFO L87 Difference]: Start difference. First operand 192 states and 243 transitions. Second operand has 10 states, 8 states have (on average 7.375) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-10 09:44:04,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:44:04,717 INFO L93 Difference]: Finished difference Result 397 states and 497 transitions. [2024-11-10 09:44:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 09:44:04,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.375) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) Word has length 126 [2024-11-10 09:44:04,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:44:04,723 INFO L225 Difference]: With dead ends: 397 [2024-11-10 09:44:04,723 INFO L226 Difference]: Without dead ends: 208 [2024-11-10 09:44:04,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 280 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-10 09:44:04,724 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 261 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 09:44:04,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 214 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 09:44:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-10 09:44:04,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 200. [2024-11-10 09:44:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 158 states have (on average 1.1898734177215189) internal successors, (188), 159 states have internal predecessors, (188), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-10 09:44:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 248 transitions. [2024-11-10 09:44:04,749 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 248 transitions. Word has length 126 [2024-11-10 09:44:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:44:04,749 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 248 transitions. [2024-11-10 09:44:04,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.375) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-10 09:44:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 248 transitions. [2024-11-10 09:44:04,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-10 09:44:04,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:44:04,751 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:44:04,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 09:44:04,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:44:04,952 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:44:04,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:44:04,952 INFO L85 PathProgramCache]: Analyzing trace with hash 562448141, now seen corresponding path program 1 times [2024-11-10 09:44:04,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:44:04,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973643215] [2024-11-10 09:44:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:04,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:44:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:44:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:44:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:44:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:44:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:44:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:44:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:44:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:44:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:44:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:44:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:44:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:44:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:44:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:44:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:44:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:44:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:44:05,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:44:05,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973643215] [2024-11-10 09:44:05,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973643215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 09:44:05,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 09:44:05,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 09:44:05,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540810986] [2024-11-10 09:44:05,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:44:05,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 09:44:05,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:44:05,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 09:44:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 09:44:05,142 INFO L87 Difference]: Start difference. First operand 200 states and 248 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:44:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:44:05,314 INFO L93 Difference]: Finished difference Result 462 states and 572 transitions. [2024-11-10 09:44:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 09:44:05,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2024-11-10 09:44:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:44:05,317 INFO L225 Difference]: With dead ends: 462 [2024-11-10 09:44:05,317 INFO L226 Difference]: Without dead ends: 265 [2024-11-10 09:44:05,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 09:44:05,319 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 32 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 09:44:05,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 340 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 09:44:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-10 09:44:05,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 221. [2024-11-10 09:44:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 179 states have (on average 1.1843575418994414) internal successors, (212), 180 states have internal predecessors, (212), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-10 09:44:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 272 transitions. [2024-11-10 09:44:05,343 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 272 transitions. Word has length 126 [2024-11-10 09:44:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:44:05,344 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 272 transitions. [2024-11-10 09:44:05,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:44:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 272 transitions. [2024-11-10 09:44:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-10 09:44:05,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:44:05,346 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:44:05,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 09:44:05,346 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:44:05,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:44:05,347 INFO L85 PathProgramCache]: Analyzing trace with hash 588211038, now seen corresponding path program 1 times [2024-11-10 09:44:05,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:44:05,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523661842] [2024-11-10 09:44:05,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:05,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:44:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:44:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:44:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:44:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:44:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:44:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:44:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:44:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:44:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:44:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:44:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:44:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:44:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:44:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:44:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:44:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:44:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-10 09:44:05,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:44:05,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523661842] [2024-11-10 09:44:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523661842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 09:44:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321775778] [2024-11-10 09:44:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:05,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:44:05,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 09:44:05,923 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) [2024-11-10 09:44:05,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 09:44:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:06,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 09:44:06,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 09:44:06,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-10 09:44:06,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-10 09:44:06,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-10 09:44:06,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-10 09:44:06,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-10 09:44:06,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 09:44:06,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2024-11-10 09:44:06,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 09:44:06,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 26 [2024-11-10 09:44:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-10 09:44:06,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 09:44:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-10 09:44:06,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321775778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 09:44:06,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 09:44:06,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-10 09:44:06,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323503197] [2024-11-10 09:44:06,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 09:44:06,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 09:44:06,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:44:06,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 09:44:06,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-10 09:44:06,790 INFO L87 Difference]: Start difference. First operand 221 states and 272 transitions. Second operand has 16 states, 13 states have (on average 8.0) internal successors, (104), 16 states have internal predecessors, (104), 7 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (33), 4 states have call predecessors, (33), 7 states have call successors, (33) [2024-11-10 09:44:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:44:07,362 INFO L93 Difference]: Finished difference Result 509 states and 624 transitions. [2024-11-10 09:44:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 09:44:07,363 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 8.0) internal successors, (104), 16 states have internal predecessors, (104), 7 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (33), 4 states have call predecessors, (33), 7 states have call successors, (33) Word has length 127 [2024-11-10 09:44:07,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:44:07,365 INFO L225 Difference]: With dead ends: 509 [2024-11-10 09:44:07,365 INFO L226 Difference]: Without dead ends: 291 [2024-11-10 09:44:07,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 276 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2024-11-10 09:44:07,369 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 330 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 09:44:07,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 391 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 09:44:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-10 09:44:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 221. [2024-11-10 09:44:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 179 states have (on average 1.1731843575418994) internal successors, (210), 180 states have internal predecessors, (210), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-10 09:44:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 270 transitions. [2024-11-10 09:44:07,393 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 270 transitions. Word has length 127 [2024-11-10 09:44:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:44:07,393 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 270 transitions. [2024-11-10 09:44:07,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 8.0) internal successors, (104), 16 states have internal predecessors, (104), 7 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (33), 4 states have call predecessors, (33), 7 states have call successors, (33) [2024-11-10 09:44:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 270 transitions. [2024-11-10 09:44:07,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-10 09:44:07,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:44:07,395 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:44:07,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 09:44:07,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:44:07,595 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:44:07,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:44:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1449803442, now seen corresponding path program 1 times [2024-11-10 09:44:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:44:07,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940772929] [2024-11-10 09:44:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:44:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 09:44:07,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489551212] [2024-11-10 09:44:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:07,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:44:07,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 09:44:07,682 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) [2024-11-10 09:44:07,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 09:44:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:07,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 09:44:07,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 09:44:07,866 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 60 treesize of output 59 [2024-11-10 09:44:08,062 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 95 treesize of output 84 [2024-11-10 09:44:08,362 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 95 treesize of output 84 [2024-11-10 09:44:08,737 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 101 treesize of output 88 [2024-11-10 09:44:09,072 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 107 treesize of output 92 [2024-11-10 09:44:09,598 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 113 treesize of output 96 [2024-11-10 09:44:09,988 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 119 treesize of output 100 [2024-11-10 09:44:10,394 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 125 treesize of output 104 [2024-11-10 09:44:10,816 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 131 treesize of output 108 [2024-11-10 09:44:12,144 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 160 treesize of output 131 [2024-11-10 09:44:13,199 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 185 treesize of output 149 [2024-11-10 09:44:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 09:44:13,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 09:44:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:44:14,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:44:14,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940772929] [2024-11-10 09:44:14,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 09:44:14,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489551212] [2024-11-10 09:44:14,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489551212] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 09:44:14,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 09:44:14,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2024-11-10 09:44:14,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876808326] [2024-11-10 09:44:14,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:44:14,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 09:44:14,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:44:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 09:44:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-10 09:44:14,514 INFO L87 Difference]: Start difference. First operand 221 states and 270 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:44:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:44:15,293 INFO L93 Difference]: Finished difference Result 572 states and 689 transitions. [2024-11-10 09:44:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 09:44:15,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2024-11-10 09:44:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:44:15,296 INFO L225 Difference]: With dead ends: 572 [2024-11-10 09:44:15,296 INFO L226 Difference]: Without dead ends: 354 [2024-11-10 09:44:15,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 238 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-10 09:44:15,300 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 104 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 09:44:15,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 381 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 09:44:15,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-10 09:44:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 349. [2024-11-10 09:44:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 277 states have (on average 1.1407942238267148) internal successors, (316), 280 states have internal predecessors, (316), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-10 09:44:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 416 transitions. [2024-11-10 09:44:15,345 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 416 transitions. Word has length 128 [2024-11-10 09:44:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:44:15,347 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 416 transitions. [2024-11-10 09:44:15,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:44:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 416 transitions. [2024-11-10 09:44:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-10 09:44:15,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:44:15,351 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:44:15,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 09:44:15,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 09:44:15,556 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:44:15,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:44:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1503993660, now seen corresponding path program 1 times [2024-11-10 09:44:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:44:15,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488096099] [2024-11-10 09:44:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:44:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 09:44:15,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416026536] [2024-11-10 09:44:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:15,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:44:15,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 09:44:15,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 09:44:15,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 09:44:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:15,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 09:44:15,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 09:44:15,830 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 60 treesize of output 59 [2024-11-10 09:44:16,059 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 95 treesize of output 84 [2024-11-10 09:44:16,325 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 95 treesize of output 84 [2024-11-10 09:44:16,706 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 101 treesize of output 88 [2024-11-10 09:44:17,035 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 107 treesize of output 92 [2024-11-10 09:44:17,362 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 113 treesize of output 96 [2024-11-10 09:44:17,716 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 119 treesize of output 100 [2024-11-10 09:44:18,092 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 125 treesize of output 104 [2024-11-10 09:44:18,563 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 131 treesize of output 108 [2024-11-10 09:44:19,041 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 131 treesize of output 106 [2024-11-10 09:44:19,406 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 145 treesize of output 117 [2024-11-10 09:44:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 09:44:19,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 09:44:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:44:20,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:44:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488096099] [2024-11-10 09:44:20,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 09:44:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416026536] [2024-11-10 09:44:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416026536] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 09:44:20,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 09:44:20,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2024-11-10 09:44:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422814459] [2024-11-10 09:44:20,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:44:20,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 09:44:20,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:44:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 09:44:20,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-10 09:44:20,156 INFO L87 Difference]: Start difference. First operand 349 states and 416 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:44:20,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:44:20,607 INFO L93 Difference]: Finished difference Result 885 states and 1048 transitions. [2024-11-10 09:44:20,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 09:44:20,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-10 09:44:20,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:44:20,613 INFO L225 Difference]: With dead ends: 885 [2024-11-10 09:44:20,613 INFO L226 Difference]: Without dead ends: 577 [2024-11-10 09:44:20,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-10 09:44:20,615 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 48 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 09:44:20,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 222 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 09:44:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-10 09:44:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 567. [2024-11-10 09:44:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 438 states have (on average 1.1027397260273972) internal successors, (483), 443 states have internal predecessors, (483), 90 states have call successors, (90), 38 states have call predecessors, (90), 38 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-10 09:44:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 663 transitions. [2024-11-10 09:44:20,711 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 663 transitions. Word has length 129 [2024-11-10 09:44:20,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:44:20,712 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 663 transitions. [2024-11-10 09:44:20,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:44:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 663 transitions. [2024-11-10 09:44:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-10 09:44:20,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:44:20,713 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:44:20,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 09:44:20,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:44:20,914 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:44:20,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:44:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 515407557, now seen corresponding path program 1 times [2024-11-10 09:44:20,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:44:20,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744942419] [2024-11-10 09:44:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:20,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:44:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 09:44:20,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851527940] [2024-11-10 09:44:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:20,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:44:20,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 09:44:21,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 09:44:21,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 09:44:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:21,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 09:44:21,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 09:44:21,194 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 60 treesize of output 59 [2024-11-10 09:44:21,384 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 95 treesize of output 84 [2024-11-10 09:44:21,677 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 95 treesize of output 84 [2024-11-10 09:44:21,992 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 101 treesize of output 88 [2024-11-10 09:44:22,335 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 107 treesize of output 92 [2024-11-10 09:44:22,700 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 113 treesize of output 96 [2024-11-10 09:44:23,061 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 119 treesize of output 100 [2024-11-10 09:44:23,448 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 125 treesize of output 104 [2024-11-10 09:44:23,863 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 131 treesize of output 108 [2024-11-10 09:44:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 09:44:24,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 09:44:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:44:24,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:44:24,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744942419] [2024-11-10 09:44:24,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 09:44:24,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851527940] [2024-11-10 09:44:24,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851527940] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 09:44:24,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 09:44:24,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2024-11-10 09:44:24,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418974843] [2024-11-10 09:44:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:44:24,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 09:44:24,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:44:24,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 09:44:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-10 09:44:24,905 INFO L87 Difference]: Start difference. First operand 567 states and 663 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:44:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:44:25,217 INFO L93 Difference]: Finished difference Result 1036 states and 1219 transitions. [2024-11-10 09:44:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 09:44:25,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 130 [2024-11-10 09:44:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:44:25,222 INFO L225 Difference]: With dead ends: 1036 [2024-11-10 09:44:25,222 INFO L226 Difference]: Without dead ends: 510 [2024-11-10 09:44:25,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-11-10 09:44:25,227 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 57 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 09:44:25,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 234 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 09:44:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-10 09:44:25,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 503. [2024-11-10 09:44:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 389 states have (on average 1.1079691516709511) internal successors, (431), 393 states have internal predecessors, (431), 80 states have call successors, (80), 33 states have call predecessors, (80), 33 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-10 09:44:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 591 transitions. [2024-11-10 09:44:25,295 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 591 transitions. Word has length 130 [2024-11-10 09:44:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:44:25,296 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 591 transitions. [2024-11-10 09:44:25,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-10 09:44:25,296 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 591 transitions. [2024-11-10 09:44:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-10 09:44:25,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:44:25,297 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:44:25,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 09:44:25,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 09:44:25,498 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:44:25,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:44:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash -526481176, now seen corresponding path program 1 times [2024-11-10 09:44:25,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:44:25,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295203385] [2024-11-10 09:44:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:25,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:44:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:44:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:44:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:44:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:44:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:44:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:44:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:44:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:44:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:44:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:44:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:44:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:44:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:44:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:44:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:44:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:44:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:44:26,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:44:26,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295203385] [2024-11-10 09:44:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295203385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 09:44:26,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 09:44:26,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 09:44:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117586208] [2024-11-10 09:44:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:44:26,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 09:44:26,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:44:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 09:44:26,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-10 09:44:26,322 INFO L87 Difference]: Start difference. First operand 503 states and 591 transitions. Second operand has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 9 states have internal predecessors, (54), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-10 09:44:26,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 09:44:26,860 INFO L93 Difference]: Finished difference Result 1039 states and 1235 transitions. [2024-11-10 09:44:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 09:44:26,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 9 states have internal predecessors, (54), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2024-11-10 09:44:26,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 09:44:26,864 INFO L225 Difference]: With dead ends: 1039 [2024-11-10 09:44:26,865 INFO L226 Difference]: Without dead ends: 731 [2024-11-10 09:44:26,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-10 09:44:26,869 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 70 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 09:44:26,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 547 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 09:44:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-11-10 09:44:26,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 541. [2024-11-10 09:44:26,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 427 states have (on average 1.1241217798594847) internal successors, (480), 431 states have internal predecessors, (480), 80 states have call successors, (80), 33 states have call predecessors, (80), 33 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-10 09:44:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 640 transitions. [2024-11-10 09:44:26,948 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 640 transitions. Word has length 131 [2024-11-10 09:44:26,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 09:44:26,948 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 640 transitions. [2024-11-10 09:44:26,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 9 states have internal predecessors, (54), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-10 09:44:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 640 transitions. [2024-11-10 09:44:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-10 09:44:26,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 09:44:26,950 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 09:44:26,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 09:44:26,950 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 09:44:26,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 09:44:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash 605924836, now seen corresponding path program 1 times [2024-11-10 09:44:26,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 09:44:26,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778050895] [2024-11-10 09:44:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 09:44:26,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 09:44:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-10 09:44:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 09:44:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-10 09:44:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 09:44:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-10 09:44:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-10 09:44:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-10 09:44:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 09:44:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 09:44:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 09:44:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 09:44:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-10 09:44:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-10 09:44:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-10 09:44:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-10 09:44:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-10 09:44:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 09:44:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-10 09:44:32,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 09:44:32,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778050895] [2024-11-10 09:44:32,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778050895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 09:44:32,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 09:44:32,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-10 09:44:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600720153] [2024-11-10 09:44:32,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 09:44:32,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 09:44:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 09:44:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 09:44:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2024-11-10 09:44:32,421 INFO L87 Difference]: Start difference. First operand 541 states and 640 transitions. Second operand has 20 states, 16 states have (on average 3.375) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16)