./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_compare_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_compare_ground.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 d4cee1ffe184d6f720684150b88947bfbeafd0a7d6fa25fd546666420e94872c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 17:49:05,968 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 17:49:06,043 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 17:49:06,053 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 17:49:06,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 17:49:06,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 17:49:06,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 17:49:06,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 17:49:06,086 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 17:49:06,088 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 17:49:06,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 17:49:06,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 17:49:06,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 17:49:06,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 17:49:06,091 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 17:49:06,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 17:49:06,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 17:49:06,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 17:49:06,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 17:49:06,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 17:49:06,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 17:49:06,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 17:49:06,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 17:49:06,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 17:49:06,098 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 17:49:06,098 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 17:49:06,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 17:49:06,099 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 17:49:06,099 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 17:49:06,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 17:49:06,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 17:49:06,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 17:49:06,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:49:06,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 17:49:06,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 17:49:06,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 17:49:06,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 17:49:06,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 17:49:06,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 17:49:06,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 17:49:06,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 17:49:06,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 17:49:06,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4cee1ffe184d6f720684150b88947bfbeafd0a7d6fa25fd546666420e94872c [2024-11-09 17:49:06,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 17:49:06,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 17:49:06,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 17:49:06,386 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 17:49:06,386 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 17:49:06,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_compare_ground.i [2024-11-09 17:49:07,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 17:49:07,976 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 17:49:07,977 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_compare_ground.i [2024-11-09 17:49:07,987 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1188a4f/1032d3bcc6fa44a5b304e0d287f5ba8f/FLAG3e65ea17e [2024-11-09 17:49:08,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1188a4f/1032d3bcc6fa44a5b304e0d287f5ba8f [2024-11-09 17:49:08,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 17:49:08,004 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 17:49:08,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 17:49:08,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 17:49:08,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 17:49:08,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f59908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08, skipping insertion in model container [2024-11-09 17:49:08,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 17:49:08,241 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/array-examples/standard_compare_ground.i[816,829] [2024-11-09 17:49:08,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:49:08,278 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 17:49:08,291 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/array-examples/standard_compare_ground.i[816,829] [2024-11-09 17:49:08,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:49:08,325 INFO L204 MainTranslator]: Completed translation [2024-11-09 17:49:08,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08 WrapperNode [2024-11-09 17:49:08,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 17:49:08,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 17:49:08,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 17:49:08,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 17:49:08,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,357 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-11-09 17:49:08,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 17:49:08,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 17:49:08,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 17:49:08,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 17:49:08,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,376 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,394 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-09 17:49:08,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,400 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 17:49:08,406 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 17:49:08,406 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 17:49:08,406 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 17:49:08,408 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (1/1) ... [2024-11-09 17:49:08,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:49:08,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:08,443 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) [2024-11-09 17:49:08,446 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 [2024-11-09 17:49:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 17:49:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 17:49:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 17:49:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 17:49:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 17:49:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 17:49:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 17:49:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 17:49:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 17:49:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 17:49:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 17:49:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 17:49:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 17:49:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 17:49:08,595 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 17:49:08,597 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 17:49:08,754 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset; [2024-11-09 17:49:08,764 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 17:49:08,765 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 17:49:08,778 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 17:49:08,779 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 17:49:08,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:49:08 BoogieIcfgContainer [2024-11-09 17:49:08,780 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 17:49:08,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 17:49:08,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 17:49:08,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 17:49:08,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:49:08" (1/3) ... [2024-11-09 17:49:08,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f48a8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:49:08, skipping insertion in model container [2024-11-09 17:49:08,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:08" (2/3) ... [2024-11-09 17:49:08,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f48a8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:49:08, skipping insertion in model container [2024-11-09 17:49:08,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:49:08" (3/3) ... [2024-11-09 17:49:08,795 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compare_ground.i [2024-11-09 17:49:08,813 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 17:49:08,813 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 17:49:08,877 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 17:49:08,885 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;@39a67baa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 17:49:08,886 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 17:49:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:08,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 17:49:08,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:08,897 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:08,897 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:08,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:08,903 INFO L85 PathProgramCache]: Analyzing trace with hash -641807206, now seen corresponding path program 1 times [2024-11-09 17:49:08,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:08,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471451354] [2024-11-09 17:49:08,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:49:09,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:09,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471451354] [2024-11-09 17:49:09,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471451354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:49:09,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:49:09,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 17:49:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780892488] [2024-11-09 17:49:09,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:49:09,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 17:49:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:09,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 17:49:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:49:09,128 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:09,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:09,142 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-11-09 17:49:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 17:49:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 17:49:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:09,153 INFO L225 Difference]: With dead ends: 41 [2024-11-09 17:49:09,153 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 17:49:09,156 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 [2024-11-09 17:49:09,161 INFO L432 NwaCegarLoop]: 26 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, 26 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 [2024-11-09 17:49:09,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 17:49:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 17:49:09,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2024-11-09 17:49:09,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-09 17:49:09,188 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2024-11-09 17:49:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:09,188 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-09 17:49:09,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-09 17:49:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 17:49:09,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:09,189 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:09,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 17:49:09,190 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:09,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:09,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1597836235, now seen corresponding path program 1 times [2024-11-09 17:49:09,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:09,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828074764] [2024-11-09 17:49:09,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:09,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:49:09,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:09,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828074764] [2024-11-09 17:49:09,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828074764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:49:09,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:49:09,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 17:49:09,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489511292] [2024-11-09 17:49:09,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:49:09,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:49:09,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:09,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:49:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:49:09,314 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:09,325 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-11-09 17:49:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:49:09,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 17:49:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:09,327 INFO L225 Difference]: With dead ends: 32 [2024-11-09 17:49:09,327 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 17:49:09,327 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 [2024-11-09 17:49:09,329 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:09,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 17:49:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 17:49:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2024-11-09 17:49:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-09 17:49:09,334 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2024-11-09 17:49:09,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:09,334 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-09 17:49:09,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-09 17:49:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 17:49:09,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:09,335 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:09,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 17:49:09,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:09,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2109717142, now seen corresponding path program 1 times [2024-11-09 17:49:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:09,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428210864] [2024-11-09 17:49:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:09,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:49:09,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:09,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428210864] [2024-11-09 17:49:09,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428210864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:09,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360658348] [2024-11-09 17:49:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:09,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:09,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:09,471 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) [2024-11-09 17:49:09,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 17:49:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:09,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 17:49:09,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:09,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 17:49:09,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360658348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:49:09,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 17:49:09,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 17:49:09,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317488881] [2024-11-09 17:49:09,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:49:09,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:49:09,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:49:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:49:09,588 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-09 17:49:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:09,606 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-11-09 17:49:09,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:49:09,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15 [2024-11-09 17:49:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:09,608 INFO L225 Difference]: With dead ends: 31 [2024-11-09 17:49:09,608 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 17:49:09,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:49:09,609 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:09,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 33 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:09,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 17:49:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-09 17:49:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-09 17:49:09,619 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2024-11-09 17:49:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:09,619 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-09 17:49:09,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-09 17:49:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-09 17:49:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 17:49:09,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:09,621 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:09,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 17:49:09,822 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 [2024-11-09 17:49:09,822 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:09,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash -163275180, now seen corresponding path program 1 times [2024-11-09 17:49:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:09,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412207699] [2024-11-09 17:49:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:09,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:09,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412207699] [2024-11-09 17:49:09,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412207699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:09,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517864422] [2024-11-09 17:49:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:09,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:09,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:09,908 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) [2024-11-09 17:49:09,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 17:49:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:09,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:49:09,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:10,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 17:49:10,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517864422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:49:10,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 17:49:10,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 17:49:10,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696919544] [2024-11-09 17:49:10,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:49:10,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:49:10,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:10,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:49:10,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:49:10,012 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2024-11-09 17:49:10,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:10,025 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-11-09 17:49:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:49:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 [2024-11-09 17:49:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:10,028 INFO L225 Difference]: With dead ends: 33 [2024-11-09 17:49:10,028 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 17:49:10,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:49:10,030 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:10,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:10,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 17:49:10,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-09 17:49:10,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-09 17:49:10,034 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2024-11-09 17:49:10,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:10,034 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-09 17:49:10,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2024-11-09 17:49:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-09 17:49:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 17:49:10,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:10,035 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:10,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 17:49:10,238 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 [2024-11-09 17:49:10,238 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:10,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:10,239 INFO L85 PathProgramCache]: Analyzing trace with hash -359788685, now seen corresponding path program 1 times [2024-11-09 17:49:10,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:10,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27784925] [2024-11-09 17:49:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:10,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:10,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:10,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27784925] [2024-11-09 17:49:10,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27784925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:10,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504499092] [2024-11-09 17:49:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:10,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:10,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:10,342 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) [2024-11-09 17:49:10,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 17:49:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:10,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:49:10,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:10,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:10,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504499092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:10,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:10,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:49:10,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725415560] [2024-11-09 17:49:10,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:10,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:49:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:10,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:49:10,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:49:10,487 INFO L87 Difference]: Start difference. First operand 21 states and 23 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) [2024-11-09 17:49:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:10,504 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-11-09 17:49:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:49:10,505 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 19 [2024-11-09 17:49:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:10,506 INFO L225 Difference]: With dead ends: 42 [2024-11-09 17:49:10,506 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 17:49:10,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:49:10,507 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:10,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:10,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 17:49:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 17:49:10,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 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) [2024-11-09 17:49:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-09 17:49:10,516 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2024-11-09 17:49:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:10,517 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-09 17:49:10,517 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) [2024-11-09 17:49:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-09 17:49:10,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 17:49:10,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:10,518 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:10,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 17:49:10,722 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 [2024-11-09 17:49:10,723 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:10,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1824219242, now seen corresponding path program 2 times [2024-11-09 17:49:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:10,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992872800] [2024-11-09 17:49:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:10,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:49:10,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:10,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992872800] [2024-11-09 17:49:10,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992872800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:10,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826198500] [2024-11-09 17:49:10,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:49:10,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:10,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:10,866 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) [2024-11-09 17:49:10,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 17:49:10,936 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:49:10,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:10,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:49:10,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:49:10,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:49:10,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826198500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:10,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:10,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:49:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68317909] [2024-11-09 17:49:10,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:10,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:49:10,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:49:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:49:10,982 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2024-11-09 17:49:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:11,004 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2024-11-09 17:49:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:49:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 25 [2024-11-09 17:49:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:11,005 INFO L225 Difference]: With dead ends: 47 [2024-11-09 17:49:11,005 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 17:49:11,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:49:11,006 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:11,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 17:49:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-09 17:49:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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) [2024-11-09 17:49:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-09 17:49:11,011 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 25 [2024-11-09 17:49:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:11,012 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-09 17:49:11,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2024-11-09 17:49:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-09 17:49:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 17:49:11,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:11,013 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:11,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 17:49:11,213 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 [2024-11-09 17:49:11,214 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:11,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1121991341, now seen corresponding path program 3 times [2024-11-09 17:49:11,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:11,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424623430] [2024-11-09 17:49:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:11,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 17:49:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424623430] [2024-11-09 17:49:11,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424623430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:11,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905121836] [2024-11-09 17:49:11,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:49:11,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:11,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:11,440 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) [2024-11-09 17:49:11,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 17:49:11,535 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 17:49:11,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:11,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 17:49:11,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-09 17:49:12,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:12,217 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 17:49:12,218 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 32 treesize of output 23 [2024-11-09 17:49:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-09 17:49:12,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905121836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:12,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:12,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2024-11-09 17:49:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552799503] [2024-11-09 17:49:12,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:12,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 17:49:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:12,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 17:49:12,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-09 17:49:12,258 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 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) [2024-11-09 17:49:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:12,506 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2024-11-09 17:49:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 17:49:12,507 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 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 37 [2024-11-09 17:49:12,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:12,507 INFO L225 Difference]: With dead ends: 72 [2024-11-09 17:49:12,507 INFO L226 Difference]: Without dead ends: 45 [2024-11-09 17:49:12,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2024-11-09 17:49:12,509 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:12,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 107 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:49:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-09 17:49:12,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-11-09 17:49:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 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) [2024-11-09 17:49:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2024-11-09 17:49:12,515 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 37 [2024-11-09 17:49:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:12,515 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2024-11-09 17:49:12,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 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) [2024-11-09 17:49:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2024-11-09 17:49:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 17:49:12,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:12,516 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:12,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 17:49:12,720 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 [2024-11-09 17:49:12,721 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:12,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2034304021, now seen corresponding path program 1 times [2024-11-09 17:49:12,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:12,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171069178] [2024-11-09 17:49:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:12,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 17:49:12,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:12,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171069178] [2024-11-09 17:49:12,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171069178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:12,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148743083] [2024-11-09 17:49:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:12,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:12,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:12,870 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) [2024-11-09 17:49:12,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 17:49:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:12,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 17:49:12,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 17:49:12,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 17:49:13,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148743083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:13,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:13,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 17:49:13,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554419504] [2024-11-09 17:49:13,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:13,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 17:49:13,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:13,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 17:49:13,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-09 17:49:13,078 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 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) [2024-11-09 17:49:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:13,107 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2024-11-09 17:49:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 17:49:13,108 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 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 43 [2024-11-09 17:49:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:13,109 INFO L225 Difference]: With dead ends: 88 [2024-11-09 17:49:13,109 INFO L226 Difference]: Without dead ends: 58 [2024-11-09 17:49:13,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-09 17:49:13,110 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:13,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-09 17:49:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-09 17:49:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 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) [2024-11-09 17:49:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2024-11-09 17:49:13,121 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 43 [2024-11-09 17:49:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:13,121 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2024-11-09 17:49:13,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 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) [2024-11-09 17:49:13,122 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2024-11-09 17:49:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 17:49:13,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:13,123 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:13,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 17:49:13,323 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 [2024-11-09 17:49:13,324 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:13,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1275087164, now seen corresponding path program 2 times [2024-11-09 17:49:13,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:13,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016799309] [2024-11-09 17:49:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:13,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 17:49:13,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:13,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016799309] [2024-11-09 17:49:13,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016799309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:13,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255085351] [2024-11-09 17:49:13,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:49:13,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:13,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:13,674 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) [2024-11-09 17:49:13,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 17:49:13,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:49:13,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:13,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 17:49:13,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 17:49:13,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 17:49:14,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255085351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:14,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:14,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-09 17:49:14,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367337825] [2024-11-09 17:49:14,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:14,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 17:49:14,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:14,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 17:49:14,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-09 17:49:14,135 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 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) [2024-11-09 17:49:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:14,182 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2024-11-09 17:49:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 17:49:14,183 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 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 57 [2024-11-09 17:49:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:14,184 INFO L225 Difference]: With dead ends: 116 [2024-11-09 17:49:14,184 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 17:49:14,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-09 17:49:14,185 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:14,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 17:49:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 17:49:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 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) [2024-11-09 17:49:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2024-11-09 17:49:14,194 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 57 [2024-11-09 17:49:14,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:14,195 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2024-11-09 17:49:14,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 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) [2024-11-09 17:49:14,195 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2024-11-09 17:49:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 17:49:14,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:14,196 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:14,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 17:49:14,400 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 [2024-11-09 17:49:14,401 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:14,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:14,401 INFO L85 PathProgramCache]: Analyzing trace with hash -627993910, now seen corresponding path program 3 times [2024-11-09 17:49:14,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:14,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121736287] [2024-11-09 17:49:14,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:14,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 17:49:15,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:15,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121736287] [2024-11-09 17:49:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121736287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102503887] [2024-11-09 17:49:15,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:49:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:15,343 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) [2024-11-09 17:49:15,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 17:49:15,480 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 17:49:15,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:15,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 17:49:15,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 52 proven. 32 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked. [2024-11-09 17:49:15,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2024-11-09 17:49:15,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102503887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:15,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:15,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 8, 7] total 40 [2024-11-09 17:49:15,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256560710] [2024-11-09 17:49:15,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:15,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 17:49:15,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:15,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 17:49:15,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 17:49:15,786 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 40 states, 40 states have (on average 2.875) internal successors, (115), 40 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) [2024-11-09 17:49:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:15,896 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2024-11-09 17:49:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 17:49:15,897 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.875) internal successors, (115), 40 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 85 [2024-11-09 17:49:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:15,898 INFO L225 Difference]: With dead ends: 142 [2024-11-09 17:49:15,898 INFO L226 Difference]: Without dead ends: 112 [2024-11-09 17:49:15,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 17:49:15,899 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:15,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 129 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:49:15,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-09 17:49:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-09 17:49:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 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) [2024-11-09 17:49:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2024-11-09 17:49:15,918 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 85 [2024-11-09 17:49:15,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:15,919 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2024-11-09 17:49:15,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.875) internal successors, (115), 40 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) [2024-11-09 17:49:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2024-11-09 17:49:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 17:49:15,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:15,923 INFO L215 NwaCegarLoop]: trace histogram [28, 27, 11, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:15,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 17:49:16,123 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 [2024-11-09 17:49:16,123 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:16,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:16,124 INFO L85 PathProgramCache]: Analyzing trace with hash 310270681, now seen corresponding path program 4 times [2024-11-09 17:49:16,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:16,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397784070] [2024-11-09 17:49:16,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:16,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-09 17:49:17,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:17,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397784070] [2024-11-09 17:49:17,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397784070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:17,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031735491] [2024-11-09 17:49:17,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 17:49:17,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:17,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:17,118 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) [2024-11-09 17:49:17,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 17:49:17,320 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 17:49:17,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:17,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 17:49:17,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2024-11-09 17:49:17,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2024-11-09 17:49:17,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031735491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:17,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:17,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 13, 13] total 52 [2024-11-09 17:49:17,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300234254] [2024-11-09 17:49:17,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:17,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-09 17:49:17,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-09 17:49:17,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=1942, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 17:49:17,925 INFO L87 Difference]: Start difference. First operand 112 states and 114 transitions. Second operand has 52 states, 52 states have (on average 3.1153846153846154) internal successors, (162), 52 states have internal predecessors, (162), 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) [2024-11-09 17:49:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:18,049 INFO L93 Difference]: Finished difference Result 216 states and 232 transitions. [2024-11-09 17:49:18,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-09 17:49:18,050 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.1153846153846154) internal successors, (162), 52 states have internal predecessors, (162), 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 111 [2024-11-09 17:49:18,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:18,051 INFO L225 Difference]: With dead ends: 216 [2024-11-09 17:49:18,051 INFO L226 Difference]: Without dead ends: 162 [2024-11-09 17:49:18,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=710, Invalid=1942, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 17:49:18,053 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 190 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 [2024-11-09 17:49:18,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 190 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:49:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-09 17:49:18,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-09 17:49:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.0186335403726707) internal successors, (164), 161 states have internal predecessors, (164), 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) [2024-11-09 17:49:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2024-11-09 17:49:18,072 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 111 [2024-11-09 17:49:18,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:18,072 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2024-11-09 17:49:18,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.1153846153846154) internal successors, (162), 52 states have internal predecessors, (162), 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) [2024-11-09 17:49:18,073 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2024-11-09 17:49:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-09 17:49:18,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:18,074 INFO L215 NwaCegarLoop]: trace histogram [29, 28, 23, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:18,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 17:49:18,275 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 [2024-11-09 17:49:18,275 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:18,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:18,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1194955350, now seen corresponding path program 5 times [2024-11-09 17:49:18,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:18,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321740900] [2024-11-09 17:49:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:18,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1783 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2024-11-09 17:49:19,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321740900] [2024-11-09 17:49:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321740900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779788593] [2024-11-09 17:49:19,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 17:49:19,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:19,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:19,209 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) [2024-11-09 17:49:19,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process