./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/vogal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/loops/vogal-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d71e1bf3f69689e919d6628cf273516827c854b2b9e73a5faa1a7ff2c381c776 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:42:13,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:42:13,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:42:13,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:42:13,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:42:13,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:42:13,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:42:13,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:42:13,218 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:42:13,219 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:42:13,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:42:13,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:42:13,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:42:13,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:42:13,221 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:42:13,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:42:13,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:42:13,222 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:42:13,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:42:13,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:42:13,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:42:13,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:42:13,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:42:13,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:42:13,224 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:42:13,225 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:42:13,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:42:13,225 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:42:13,226 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:42:13,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:42:13,226 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:42:13,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:42:13,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:42:13,227 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:42:13,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:42:13,228 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:42:13,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:42:13,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:42:13,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:42:13,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:42:13,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:42:13,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:42:13,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d71e1bf3f69689e919d6628cf273516827c854b2b9e73a5faa1a7ff2c381c776 [2024-11-16 06:42:13,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:42:13,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:42:13,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:42:13,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:42:13,532 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:42:13,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/vogal-2.i [2024-11-16 06:42:14,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:42:15,121 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:42:15,121 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/vogal-2.i [2024-11-16 06:42:15,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d3a47fa/23954b29dd4f4c688e05f55c3459b791/FLAGb1c19d516 [2024-11-16 06:42:15,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d3a47fa/23954b29dd4f4c688e05f55c3459b791 [2024-11-16 06:42:15,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:42:15,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:42:15,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:42:15,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:42:15,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:42:15,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5431aa69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15, skipping insertion in model container [2024-11-16 06:42:15,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,172 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:42:15,336 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/loops/vogal-2.i[808,821] [2024-11-16 06:42:15,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:42:15,384 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:42:15,395 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/loops/vogal-2.i[808,821] [2024-11-16 06:42:15,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:42:15,433 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:42:15,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15 WrapperNode [2024-11-16 06:42:15,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:42:15,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:42:15,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:42:15,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:42:15,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,472 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2024-11-16 06:42:15,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:42:15,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:42:15,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:42:15,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:42:15,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,497 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 6, 14]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 14 writes are split as follows [0, 2, 12]. [2024-11-16 06:42:15,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,509 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,510 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:42:15,515 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:42:15,516 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:42:15,516 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:42:15,517 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (1/1) ... [2024-11-16 06:42:15,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:42:15,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:15,554 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) [2024-11-16 06:42:15,556 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 [2024-11-16 06:42:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:42:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:42:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:42:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 06:42:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-16 06:42:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-16 06:42:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-16 06:42:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 06:42:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 06:42:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 06:42:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 06:42:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:42:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:42:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 06:42:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 06:42:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 06:42:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:42:15,678 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:42:15,680 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:42:15,866 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L26: call ULTIMATE.dealloc(main_~#string_entrada~0#1.base, main_~#string_entrada~0#1.offset);havoc main_~#string_entrada~0#1.base, main_~#string_entrada~0#1.offset;call ULTIMATE.dealloc(main_~#vetor_vogais~0#1.base, main_~#vetor_vogais~0#1.offset);havoc main_~#vetor_vogais~0#1.base, main_~#vetor_vogais~0#1.offset; [2024-11-16 06:42:15,877 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-16 06:42:15,877 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:42:15,888 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:42:15,888 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:42:15,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:42:15 BoogieIcfgContainer [2024-11-16 06:42:15,889 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:42:15,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:42:15,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:42:15,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:42:15,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:42:15" (1/3) ... [2024-11-16 06:42:15,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a805f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:42:15, skipping insertion in model container [2024-11-16 06:42:15,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:42:15" (2/3) ... [2024-11-16 06:42:15,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a805f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:42:15, skipping insertion in model container [2024-11-16 06:42:15,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:42:15" (3/3) ... [2024-11-16 06:42:15,897 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2024-11-16 06:42:15,914 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:42:15,915 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:42:15,978 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:42:15,988 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;@ab05e48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:42:15,988 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:42:15,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:15,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 06:42:15,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:15,999 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:16,000 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:16,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash -28154572, now seen corresponding path program 1 times [2024-11-16 06:42:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:16,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356109178] [2024-11-16 06:42:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:16,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:42:16,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:16,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356109178] [2024-11-16 06:42:16,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356109178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:42:16,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:42:16,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:42:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542381951] [2024-11-16 06:42:16,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:16,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:42:16,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:16,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:42:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:42:16,259 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:16,273 INFO L93 Difference]: Finished difference Result 61 states and 87 transitions. [2024-11-16 06:42:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:42:16,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-16 06:42:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:16,280 INFO L225 Difference]: With dead ends: 61 [2024-11-16 06:42:16,280 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 06:42:16,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:42:16,285 INFO L432 NwaCegarLoop]: 39 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, 39 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 [2024-11-16 06:42:16,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:42:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 06:42:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 06:42:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-16 06:42:16,312 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 13 [2024-11-16 06:42:16,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:16,313 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-16 06:42:16,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-16 06:42:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-16 06:42:16,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:16,314 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:16,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:42:16,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:16,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:16,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1554255328, now seen corresponding path program 1 times [2024-11-16 06:42:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:16,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567662109] [2024-11-16 06:42:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:16,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:42:16,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:16,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567662109] [2024-11-16 06:42:16,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567662109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:42:16,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:42:16,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:42:16,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957713090] [2024-11-16 06:42:16,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:16,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:42:16,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:42:16,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:42:16,552 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:16,604 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-11-16 06:42:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:42:16,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-16 06:42:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:16,607 INFO L225 Difference]: With dead ends: 73 [2024-11-16 06:42:16,607 INFO L226 Difference]: Without dead ends: 49 [2024-11-16 06:42:16,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:42:16,608 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:16,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 50 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:42:16,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-16 06:42:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2024-11-16 06:42:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-16 06:42:16,621 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 17 [2024-11-16 06:42:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:16,621 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-16 06:42:16,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-16 06:42:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-16 06:42:16,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:16,626 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:16,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:42:16,627 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:16,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1320765151, now seen corresponding path program 1 times [2024-11-16 06:42:16,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:16,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364166756] [2024-11-16 06:42:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:16,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:42:16,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364166756] [2024-11-16 06:42:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364166756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:16,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670525561] [2024-11-16 06:42:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:16,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:16,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:16,850 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) [2024-11-16 06:42:16,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:42:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:16,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 06:42:16,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:42:17,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:42:17,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670525561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:42:17,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:42:17,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-16 06:42:17,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874973931] [2024-11-16 06:42:17,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:17,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:42:17,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:17,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:42:17,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:42:17,037 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:17,076 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-11-16 06:42:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:42:17,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-16 06:42:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:17,079 INFO L225 Difference]: With dead ends: 58 [2024-11-16 06:42:17,079 INFO L226 Difference]: Without dead ends: 53 [2024-11-16 06:42:17,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:42:17,081 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:17,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 125 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:42:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-16 06:42:17,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2024-11-16 06:42:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-16 06:42:17,095 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 19 [2024-11-16 06:42:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:17,096 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-16 06:42:17,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:17,096 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-16 06:42:17,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 06:42:17,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:17,097 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:17,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:42:17,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:17,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:17,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1144273851, now seen corresponding path program 1 times [2024-11-16 06:42:17,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:17,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491966310] [2024-11-16 06:42:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:17,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:42:17,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491966310] [2024-11-16 06:42:17,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491966310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:17,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866106688] [2024-11-16 06:42:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:17,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:17,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:17,468 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) [2024-11-16 06:42:17,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:42:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:17,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 06:42:17,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:42:17,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:17,956 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-16 06:42:17,957 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 46 treesize of output 30 [2024-11-16 06:42:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:42:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866106688] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:17,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:42:17,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 9] total 15 [2024-11-16 06:42:17,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549635071] [2024-11-16 06:42:17,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:17,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:42:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:17,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:42:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:42:17,987 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:18,154 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2024-11-16 06:42:18,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:42:18,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 06:42:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:18,155 INFO L225 Difference]: With dead ends: 88 [2024-11-16 06:42:18,156 INFO L226 Difference]: Without dead ends: 47 [2024-11-16 06:42:18,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-16 06:42:18,158 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:18,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 130 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:42:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-16 06:42:18,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-16 06:42:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-11-16 06:42:18,170 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 28 [2024-11-16 06:42:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:18,170 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-11-16 06:42:18,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-11-16 06:42:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 06:42:18,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:18,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:18,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:42:18,376 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,SelfDestructingSolverStorable3 [2024-11-16 06:42:18,377 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:18,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash 639650150, now seen corresponding path program 1 times [2024-11-16 06:42:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184606789] [2024-11-16 06:42:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:42:18,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:18,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184606789] [2024-11-16 06:42:18,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184606789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:18,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455191124] [2024-11-16 06:42:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:18,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:18,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:18,493 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) [2024-11-16 06:42:18,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:42:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:18,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 06:42:18,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:18,611 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 40 treesize of output 39 [2024-11-16 06:42:18,705 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 11 treesize of output 7 [2024-11-16 06:42:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 06:42:19,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 06:42:19,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455191124] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:19,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:42:19,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 11] total 21 [2024-11-16 06:42:19,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449284459] [2024-11-16 06:42:19,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:42:19,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:42:19,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:19,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:42:19,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-16 06:42:19,696 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:20,061 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2024-11-16 06:42:20,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:42:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-16 06:42:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:20,062 INFO L225 Difference]: With dead ends: 97 [2024-11-16 06:42:20,062 INFO L226 Difference]: Without dead ends: 85 [2024-11-16 06:42:20,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:42:20,063 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 101 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:20,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 156 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:42:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-16 06:42:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 55. [2024-11-16 06:42:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 54 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2024-11-16 06:42:20,077 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 30 [2024-11-16 06:42:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:20,077 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2024-11-16 06:42:20,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2024-11-16 06:42:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 06:42:20,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:20,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:20,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 06:42:20,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:20,283 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:20,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:20,284 INFO L85 PathProgramCache]: Analyzing trace with hash 992957039, now seen corresponding path program 1 times [2024-11-16 06:42:20,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:20,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907903697] [2024-11-16 06:42:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:42:20,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:20,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907903697] [2024-11-16 06:42:20,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907903697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:20,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976772213] [2024-11-16 06:42:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:20,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:20,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:20,389 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) [2024-11-16 06:42:20,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:42:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:20,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 06:42:20,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:20,593 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 16 treesize of output 8 [2024-11-16 06:42:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:42:20,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:20,713 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-16 06:42:20,714 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 47 treesize of output 31 [2024-11-16 06:42:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:42:20,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976772213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:20,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:20,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 7] total 15 [2024-11-16 06:42:20,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750818188] [2024-11-16 06:42:20,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:20,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 06:42:20,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 06:42:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:42:20,738 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:20,902 INFO L93 Difference]: Finished difference Result 163 states and 210 transitions. [2024-11-16 06:42:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:42:20,903 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-16 06:42:20,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:20,904 INFO L225 Difference]: With dead ends: 163 [2024-11-16 06:42:20,906 INFO L226 Difference]: Without dead ends: 114 [2024-11-16 06:42:20,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-16 06:42:20,907 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 210 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:20,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 177 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:42:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-16 06:42:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 59. [2024-11-16 06:42:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2024-11-16 06:42:20,922 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 30 [2024-11-16 06:42:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:20,924 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2024-11-16 06:42:20,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2024-11-16 06:42:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 06:42:20,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:20,925 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:20,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:21,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:21,127 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:21,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:21,128 INFO L85 PathProgramCache]: Analyzing trace with hash 725009800, now seen corresponding path program 1 times [2024-11-16 06:42:21,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:21,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056606142] [2024-11-16 06:42:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:42:21,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056606142] [2024-11-16 06:42:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056606142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164962722] [2024-11-16 06:42:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:21,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:21,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:21,271 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) [2024-11-16 06:42:21,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:42:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:21,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 06:42:21,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:21,390 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 [2024-11-16 06:42:21,965 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 11 treesize of output 7 [2024-11-16 06:42:25,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:25,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2024-11-16 06:42:25,899 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 69 treesize of output 65 [2024-11-16 06:42:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:42:26,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:27,345 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 29 treesize of output 17 [2024-11-16 06:42:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:42:27,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164962722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:27,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:27,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 16, 17] total 34 [2024-11-16 06:42:27,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430143220] [2024-11-16 06:42:27,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:27,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 06:42:27,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 06:42:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=885, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 06:42:27,523 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:36,320 INFO L93 Difference]: Finished difference Result 262 states and 335 transitions. [2024-11-16 06:42:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 06:42:36,325 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 06:42:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:36,326 INFO L225 Difference]: With dead ends: 262 [2024-11-16 06:42:36,326 INFO L226 Difference]: Without dead ends: 211 [2024-11-16 06:42:36,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=585, Invalid=1965, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 06:42:36,328 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 568 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:36,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 614 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-16 06:42:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-16 06:42:36,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 68. [2024-11-16 06:42:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 67 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2024-11-16 06:42:36,350 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 36 [2024-11-16 06:42:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:36,350 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2024-11-16 06:42:36,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2024-11-16 06:42:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 06:42:36,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:36,352 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:36,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 06:42:36,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:36,553 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:36,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1404111369, now seen corresponding path program 1 times [2024-11-16 06:42:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:36,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460391425] [2024-11-16 06:42:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:42:36,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:36,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460391425] [2024-11-16 06:42:36,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460391425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:36,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134960920] [2024-11-16 06:42:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:36,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:36,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:36,676 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) [2024-11-16 06:42:36,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:42:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:36,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 06:42:36,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:42:36,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:42:36,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134960920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:36,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:36,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 10 [2024-11-16 06:42:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652895679] [2024-11-16 06:42:36,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:36,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:42:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:42:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:42:36,826 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:37,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:37,256 INFO L93 Difference]: Finished difference Result 494 states and 680 transitions. [2024-11-16 06:42:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 06:42:37,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 06:42:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:37,260 INFO L225 Difference]: With dead ends: 494 [2024-11-16 06:42:37,260 INFO L226 Difference]: Without dead ends: 436 [2024-11-16 06:42:37,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2024-11-16 06:42:37,263 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 404 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:37,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 323 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:42:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-16 06:42:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 118. [2024-11-16 06:42:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 117 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 140 transitions. [2024-11-16 06:42:37,305 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 140 transitions. Word has length 39 [2024-11-16 06:42:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:37,305 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 140 transitions. [2024-11-16 06:42:37,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 140 transitions. [2024-11-16 06:42:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 06:42:37,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:37,307 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:37,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:42:37,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:37,512 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:37,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash 159862148, now seen corresponding path program 1 times [2024-11-16 06:42:37,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:37,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292100885] [2024-11-16 06:42:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 06:42:37,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:37,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292100885] [2024-11-16 06:42:37,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292100885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:37,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864815853] [2024-11-16 06:42:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:37,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:37,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:37,703 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) [2024-11-16 06:42:37,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:42:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:37,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-16 06:42:37,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:38,285 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 20 treesize of output 12 [2024-11-16 06:42:38,287 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 16 treesize of output 8 [2024-11-16 06:42:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 06:42:38,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:38,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:38,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 26 treesize of output 22 [2024-11-16 06:42:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 06:42:38,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864815853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:38,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:38,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 13] total 31 [2024-11-16 06:42:38,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386226216] [2024-11-16 06:42:38,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:38,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 06:42:38,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:38,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 06:42:38,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-11-16 06:42:38,937 INFO L87 Difference]: Start difference. First operand 118 states and 140 transitions. Second operand has 31 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 31 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:40,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:40,382 INFO L93 Difference]: Finished difference Result 910 states and 1120 transitions. [2024-11-16 06:42:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-16 06:42:40,383 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 31 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-16 06:42:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:40,386 INFO L225 Difference]: With dead ends: 910 [2024-11-16 06:42:40,386 INFO L226 Difference]: Without dead ends: 804 [2024-11-16 06:42:40,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=419, Invalid=1933, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 06:42:40,388 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 583 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:40,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1866 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 06:42:40,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-11-16 06:42:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 163. [2024-11-16 06:42:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.1975308641975309) internal successors, (194), 162 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 194 transitions. [2024-11-16 06:42:40,425 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 194 transitions. Word has length 61 [2024-11-16 06:42:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:40,425 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 194 transitions. [2024-11-16 06:42:40,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.6129032258064515) internal successors, (112), 31 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 194 transitions. [2024-11-16 06:42:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 06:42:40,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:40,427 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:40,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 06:42:40,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:40,628 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:40,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1074874170, now seen corresponding path program 1 times [2024-11-16 06:42:40,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:40,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831828695] [2024-11-16 06:42:40,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:40,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-16 06:42:40,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831828695] [2024-11-16 06:42:40,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831828695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573168996] [2024-11-16 06:42:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:40,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:40,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:40,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:42:40,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:42:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:41,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 06:42:41,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:42:41,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 06:42:41,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573168996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:41,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:41,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-11-16 06:42:41,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104639137] [2024-11-16 06:42:41,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:41,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 06:42:41,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:41,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 06:42:41,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-16 06:42:41,213 INFO L87 Difference]: Start difference. First operand 163 states and 194 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:43,588 INFO L93 Difference]: Finished difference Result 1651 states and 2260 transitions. [2024-11-16 06:42:43,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-16 06:42:43,588 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-16 06:42:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:43,593 INFO L225 Difference]: With dead ends: 1651 [2024-11-16 06:42:43,594 INFO L226 Difference]: Without dead ends: 1502 [2024-11-16 06:42:43,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1226, Invalid=5416, Unknown=0, NotChecked=0, Total=6642 [2024-11-16 06:42:43,598 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 2188 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:43,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2188 Valid, 1931 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 06:42:43,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2024-11-16 06:42:43,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 309. [2024-11-16 06:42:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.2012987012987013) internal successors, (370), 308 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2024-11-16 06:42:43,656 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 63 [2024-11-16 06:42:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:43,656 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2024-11-16 06:42:43,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2024-11-16 06:42:43,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-16 06:42:43,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:43,658 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 8, 8, 8, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:43,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 06:42:43,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 06:42:43,859 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:43,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:43,860 INFO L85 PathProgramCache]: Analyzing trace with hash -188223579, now seen corresponding path program 2 times [2024-11-16 06:42:43,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:43,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728052283] [2024-11-16 06:42:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:43,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-16 06:42:44,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:44,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728052283] [2024-11-16 06:42:44,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728052283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:44,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226486275] [2024-11-16 06:42:44,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:42:44,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:44,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:44,227 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:42:44,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:42:44,385 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:42:44,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:42:44,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 06:42:44,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-16 06:42:44,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 52 proven. 114 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 06:42:44,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226486275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:44,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:44,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-11-16 06:42:44,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381517889] [2024-11-16 06:42:44,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:44,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 06:42:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 06:42:44,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2024-11-16 06:42:44,674 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:45,748 INFO L93 Difference]: Finished difference Result 2627 states and 3261 transitions. [2024-11-16 06:42:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 06:42:45,749 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-16 06:42:45,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:45,756 INFO L225 Difference]: With dead ends: 2627 [2024-11-16 06:42:45,756 INFO L226 Difference]: Without dead ends: 2334 [2024-11-16 06:42:45,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2024-11-16 06:42:45,758 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 868 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:45,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1662 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 06:42:45,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2024-11-16 06:42:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 317. [2024-11-16 06:42:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.1962025316455696) internal successors, (378), 316 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 378 transitions. [2024-11-16 06:42:45,839 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 378 transitions. Word has length 113 [2024-11-16 06:42:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:45,840 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 378 transitions. [2024-11-16 06:42:45,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.75) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 378 transitions. [2024-11-16 06:42:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 06:42:45,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:45,842 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:45,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 06:42:46,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:46,043 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:46,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1531163177, now seen corresponding path program 3 times [2024-11-16 06:42:46,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:46,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607258653] [2024-11-16 06:42:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:46,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 111 proven. 55 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2024-11-16 06:42:48,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607258653] [2024-11-16 06:42:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607258653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:48,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828709188] [2024-11-16 06:42:48,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:42:48,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:48,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:48,326 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:42:48,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 06:42:48,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 06:42:48,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:42:48,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 06:42:48,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:49,104 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 20 treesize of output 12 [2024-11-16 06:42:49,107 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 16 treesize of output 8 [2024-11-16 06:42:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 31 proven. 45 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-16 06:42:49,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:42:49,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:49,433 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 51 treesize of output 40 [2024-11-16 06:42:49,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:42:49,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 26 treesize of output 24 [2024-11-16 06:42:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 38 proven. 18 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-11-16 06:42:49,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828709188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:42:49,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:42:49,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 26 [2024-11-16 06:42:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368417969] [2024-11-16 06:42:49,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:42:49,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 06:42:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:42:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 06:42:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2024-11-16 06:42:49,544 INFO L87 Difference]: Start difference. First operand 317 states and 378 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:42:52,046 INFO L93 Difference]: Finished difference Result 848 states and 1036 transitions. [2024-11-16 06:42:52,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-16 06:42:52,047 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-16 06:42:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:42:52,050 INFO L225 Difference]: With dead ends: 848 [2024-11-16 06:42:52,050 INFO L226 Difference]: Without dead ends: 794 [2024-11-16 06:42:52,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=632, Invalid=3924, Unknown=0, NotChecked=0, Total=4556 [2024-11-16 06:42:52,052 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 631 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 06:42:52,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 867 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 06:42:52,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2024-11-16 06:42:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 411. [2024-11-16 06:42:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.2) internal successors, (492), 410 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 492 transitions. [2024-11-16 06:42:52,162 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 492 transitions. Word has length 121 [2024-11-16 06:42:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:42:52,162 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 492 transitions. [2024-11-16 06:42:52,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:42:52,163 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 492 transitions. [2024-11-16 06:42:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 06:42:52,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:42:52,164 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 9, 8, 8, 8, 7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:42:52,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 06:42:52,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 06:42:52,365 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:42:52,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:42:52,366 INFO L85 PathProgramCache]: Analyzing trace with hash 168749355, now seen corresponding path program 4 times [2024-11-16 06:42:52,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:42:52,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479035966] [2024-11-16 06:42:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:42:52,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:42:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:42:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 103 proven. 78 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-11-16 06:42:54,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:42:54,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479035966] [2024-11-16 06:42:54,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479035966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:42:54,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096131835] [2024-11-16 06:42:54,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:42:54,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:42:54,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:42:54,269 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:42:54,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 06:42:54,475 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:42:54,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:42:54,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-16 06:42:54,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:42:54,496 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 40 treesize of output 39 [2024-11-16 06:42:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 103 proven. 246 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-16 06:42:57,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:43:00,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:43:00,238 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 99 treesize of output 80