./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copy1_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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_copy1_ground-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1970a9a8aaeda89e1214c4bedc05560d9ae947bac2f3f8ce77018b7acf727f81 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 00:10:03,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 00:10:03,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 00:10:03,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 00:10:03,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 00:10:03,807 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 00:10:03,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 00:10:03,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 00:10:03,809 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 00:10:03,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 00:10:03,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 00:10:03,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 00:10:03,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 00:10:03,810 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:10:03,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 00:10:03,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 00:10:03,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 00:10:03,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 00:10:03,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 00:10:03,811 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 1970a9a8aaeda89e1214c4bedc05560d9ae947bac2f3f8ce77018b7acf727f81 [2025-03-08 00:10:04,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 00:10:04,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 00:10:04,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 00:10:04,056 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 00:10:04,056 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 00:10:04,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copy1_ground-2.i [2025-03-08 00:10:05,231 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e403f6c4/568e700322734a7cb49d3a80ee1c12b9/FLAG8582eb512 [2025-03-08 00:10:05,438 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 00:10:05,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy1_ground-2.i [2025-03-08 00:10:05,446 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e403f6c4/568e700322734a7cb49d3a80ee1c12b9/FLAG8582eb512 [2025-03-08 00:10:05,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e403f6c4/568e700322734a7cb49d3a80ee1c12b9 [2025-03-08 00:10:05,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 00:10:05,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 00:10:05,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 00:10:05,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 00:10:05,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 00:10:05,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69090a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05, skipping insertion in model container [2025-03-08 00:10:05,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,483 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 00:10:05,590 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_copy1_ground-2.i[816,829] [2025-03-08 00:10:05,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:10:05,609 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 00:10:05,617 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_copy1_ground-2.i[816,829] [2025-03-08 00:10:05,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:10:05,638 INFO L204 MainTranslator]: Completed translation [2025-03-08 00:10:05,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05 WrapperNode [2025-03-08 00:10:05,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 00:10:05,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 00:10:05,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 00:10:05,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 00:10:05,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,662 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2025-03-08 00:10:05,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 00:10:05,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 00:10:05,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 00:10:05,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 00:10:05,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,683 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 2, 4]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2025-03-08 00:10:05,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,691 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 00:10:05,697 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 00:10:05,698 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 00:10:05,698 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 00:10:05,699 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (1/1) ... [2025-03-08 00:10:05,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:10:05,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:10:05,721 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) [2025-03-08 00:10:05,725 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 [2025-03-08 00:10:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 00:10:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 00:10:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 00:10:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 00:10:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 00:10:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 00:10:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 00:10:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 00:10:05,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 00:10:05,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 00:10:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 00:10:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 00:10:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 00:10:05,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 00:10:05,799 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 00:10:05,801 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 00:10:05,903 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L16: call ULTIMATE.dealloc(main_~#a1~0#1.base, main_~#a1~0#1.offset);havoc main_~#a1~0#1.base, main_~#a1~0#1.offset;call ULTIMATE.dealloc(main_~#a2~0#1.base, main_~#a2~0#1.offset);havoc main_~#a2~0#1.base, main_~#a2~0#1.offset; [2025-03-08 00:10:05,909 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-08 00:10:05,909 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 00:10:05,918 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 00:10:05,918 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 00:10:05,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:10:05 BoogieIcfgContainer [2025-03-08 00:10:05,918 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 00:10:05,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 00:10:05,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 00:10:05,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 00:10:05,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:10:05" (1/3) ... [2025-03-08 00:10:05,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cfa943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:10:05, skipping insertion in model container [2025-03-08 00:10:05,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:10:05" (2/3) ... [2025-03-08 00:10:05,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cfa943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:10:05, skipping insertion in model container [2025-03-08 00:10:05,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:10:05" (3/3) ... [2025-03-08 00:10:05,926 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_copy1_ground-2.i [2025-03-08 00:10:05,936 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 00:10:05,938 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_copy1_ground-2.i that has 1 procedures, 12 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-08 00:10:05,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 00:10:05,990 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;@4da493b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 00:10:05,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 00:10:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2025-03-08 00:10:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 00:10:05,997 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:10:05,998 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:10:05,998 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:10:06,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:10:06,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1712306486, now seen corresponding path program 1 times [2025-03-08 00:10:06,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:10:06,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577314280] [2025-03-08 00:10:06,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:10:06,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:10:06,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 00:10:06,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 00:10:06,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:10:06,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:10:06,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:10:06,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577314280] [2025-03-08 00:10:06,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577314280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:10:06,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:10:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:10:06,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581514290] [2025-03-08 00:10:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:10:06,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:10:06,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:10:06,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:10:06,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:10:06,189 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:10:06,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:10:06,209 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2025-03-08 00:10:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:10:06,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-08 00:10:06,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:10:06,215 INFO L225 Difference]: With dead ends: 22 [2025-03-08 00:10:06,216 INFO L226 Difference]: Without dead ends: 10 [2025-03-08 00:10:06,220 INFO L434 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 [2025-03-08 00:10:06,222 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 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 [2025-03-08 00:10:06,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:10:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-03-08 00:10:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2025-03-08 00:10:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2025-03-08 00:10:06,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2025-03-08 00:10:06,243 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2025-03-08 00:10:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:10:06,244 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2025-03-08 00:10:06,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:10:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2025-03-08 00:10:06,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 00:10:06,245 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:10:06,245 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:10:06,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 00:10:06,246 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:10:06,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:10:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1511385571, now seen corresponding path program 1 times [2025-03-08 00:10:06,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:10:06,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705580844] [2025-03-08 00:10:06,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:10:06,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:10:06,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 00:10:06,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 00:10:06,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:10:06,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:10:06,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:10:06,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705580844] [2025-03-08 00:10:06,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705580844] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:10:06,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950232744] [2025-03-08 00:10:06,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:10:06,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:06,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:10:06,360 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) [2025-03-08 00:10:06,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 00:10:06,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 00:10:06,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 00:10:06,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:10:06,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:06,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 00:10:06,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:10:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 00:10:06,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 00:10:06,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950232744] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:10:06,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 00:10:06,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-08 00:10:06,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349508978] [2025-03-08 00:10:06,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:10:06,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:10:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:10:06,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:10:06,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:10:06,456 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2025-03-08 00:10:06,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:10:06,466 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2025-03-08 00:10:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:10:06,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-03-08 00:10:06,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:10:06,467 INFO L225 Difference]: With dead ends: 16 [2025-03-08 00:10:06,467 INFO L226 Difference]: Without dead ends: 11 [2025-03-08 00:10:06,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:10:06,468 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 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 [2025-03-08 00:10:06,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:10:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2025-03-08 00:10:06,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2025-03-08 00:10:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2025-03-08 00:10:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-03-08 00:10:06,470 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2025-03-08 00:10:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:10:06,470 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-03-08 00:10:06,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2025-03-08 00:10:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2025-03-08 00:10:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 00:10:06,471 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:10:06,471 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:10:06,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 00:10:06,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:06,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:10:06,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:10:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash 392642826, now seen corresponding path program 1 times [2025-03-08 00:10:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:10:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777206481] [2025-03-08 00:10:06,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:10:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:10:06,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 00:10:06,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 00:10:06,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:10:06,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 00:10:06,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:10:06,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777206481] [2025-03-08 00:10:06,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777206481] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:10:06,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370313471] [2025-03-08 00:10:06,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:10:06,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:06,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:10:06,743 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) [2025-03-08 00:10:06,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 00:10:06,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 00:10:06,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 00:10:06,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:10:06,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:06,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 00:10:06,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:10:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 00:10:06,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:10:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 00:10:06,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370313471] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:10:06,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:10:06,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 00:10:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451705922] [2025-03-08 00:10:06,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:10:06,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 00:10:06,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:10:06,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 00:10:06,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 00:10:06,854 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2025-03-08 00:10:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:10:06,870 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2025-03-08 00:10:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 00:10:06,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 9 [2025-03-08 00:10:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:10:06,871 INFO L225 Difference]: With dead ends: 21 [2025-03-08 00:10:06,871 INFO L226 Difference]: Without dead ends: 14 [2025-03-08 00:10:06,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 00:10:06,873 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:10:06,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:10:06,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-08 00:10:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-08 00:10:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2025-03-08 00:10:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-08 00:10:06,877 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2025-03-08 00:10:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:10:06,878 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-08 00:10:06,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2025-03-08 00:10:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-08 00:10:06,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 00:10:06,878 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:10:06,879 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:10:06,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 00:10:07,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-08 00:10:07,082 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:10:07,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:10:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2133065411, now seen corresponding path program 2 times [2025-03-08 00:10:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:10:07,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297319282] [2025-03-08 00:10:07,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:10:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:10:07,097 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-03-08 00:10:07,125 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 00:10:07,125 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:10:07,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 00:10:07,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:10:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297319282] [2025-03-08 00:10:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297319282] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:10:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975131485] [2025-03-08 00:10:07,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:10:07,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:07,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:10:07,200 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) [2025-03-08 00:10:07,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 00:10:07,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-03-08 00:10:07,281 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 00:10:07,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:10:07,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:07,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 00:10:07,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:10:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 00:10:07,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:10:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 00:10:07,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975131485] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:10:07,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:10:07,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-03-08 00:10:07,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243972155] [2025-03-08 00:10:07,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:10:07,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 00:10:07,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:10:07,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 00:10:07,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-08 00:10:07,405 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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) [2025-03-08 00:10:07,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:10:07,430 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2025-03-08 00:10:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 00:10:07,430 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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) Word has length 12 [2025-03-08 00:10:07,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:10:07,431 INFO L225 Difference]: With dead ends: 28 [2025-03-08 00:10:07,431 INFO L226 Difference]: Without dead ends: 21 [2025-03-08 00:10:07,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-08 00:10:07,434 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:10:07,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:10:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-08 00:10:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-03-08 00:10:07,436 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) [2025-03-08 00:10:07,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2025-03-08 00:10:07,436 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2025-03-08 00:10:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:10:07,436 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2025-03-08 00:10:07,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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) [2025-03-08 00:10:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2025-03-08 00:10:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-08 00:10:07,439 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:10:07,439 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:10:07,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 00:10:07,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:07,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:10:07,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:10:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash 505764106, now seen corresponding path program 3 times [2025-03-08 00:10:07,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:10:07,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52851003] [2025-03-08 00:10:07,646 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:10:07,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:10:07,672 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 6 equivalence classes. [2025-03-08 00:10:07,679 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 19 statements. [2025-03-08 00:10:07,680 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 00:10:07,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-08 00:10:07,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:10:07,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52851003] [2025-03-08 00:10:07,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52851003] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:10:07,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538555221] [2025-03-08 00:10:07,726 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:10:07,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:07,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:10:07,728 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) [2025-03-08 00:10:07,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 00:10:07,780 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 6 equivalence classes. [2025-03-08 00:10:07,792 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 19 statements. [2025-03-08 00:10:07,793 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 00:10:07,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:07,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 00:10:07,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:10:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-08 00:10:07,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:10:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-08 00:10:07,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538555221] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:10:07,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:10:07,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-08 00:10:07,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827544219] [2025-03-08 00:10:07,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:10:07,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 00:10:07,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:10:07,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 00:10:07,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-08 00:10:07,831 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2025-03-08 00:10:07,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:10:07,845 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2025-03-08 00:10:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 00:10:07,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 [2025-03-08 00:10:07,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:10:07,846 INFO L225 Difference]: With dead ends: 30 [2025-03-08 00:10:07,846 INFO L226 Difference]: Without dead ends: 25 [2025-03-08 00:10:07,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-08 00:10:07,847 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:10:07,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:10:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-08 00:10:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-08 00:10:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2025-03-08 00:10:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2025-03-08 00:10:07,851 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2025-03-08 00:10:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:10:07,851 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2025-03-08 00:10:07,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2025-03-08 00:10:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2025-03-08 00:10:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-08 00:10:07,851 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:10:07,852 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:10:07,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 00:10:08,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:08,052 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:10:08,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:10:08,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1126821322, now seen corresponding path program 4 times [2025-03-08 00:10:08,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:10:08,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076086244] [2025-03-08 00:10:08,053 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:10:08,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:10:08,072 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-03-08 00:10:08,093 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 00:10:08,093 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 00:10:08,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 00:10:08,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:10:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076086244] [2025-03-08 00:10:08,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076086244] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:10:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660398242] [2025-03-08 00:10:08,321 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:10:08,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:10:08,323 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) [2025-03-08 00:10:08,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 00:10:08,378 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-03-08 00:10:08,404 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 00:10:08,404 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 00:10:08,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:08,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 00:10:08,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:10:08,428 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 00:10:08,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:10:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 00:10:08,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660398242] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:10:08,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:10:08,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-08 00:10:08,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221221519] [2025-03-08 00:10:08,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:10:08,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 00:10:08,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:10:08,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 00:10:08,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-08 00:10:08,610 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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) [2025-03-08 00:10:08,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:10:08,639 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2025-03-08 00:10:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 00:10:08,639 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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 23 [2025-03-08 00:10:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:10:08,641 INFO L225 Difference]: With dead ends: 49 [2025-03-08 00:10:08,641 INFO L226 Difference]: Without dead ends: 37 [2025-03-08 00:10:08,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-08 00:10:08,643 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:10:08,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:10:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-08 00:10:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-03-08 00:10:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 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) [2025-03-08 00:10:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2025-03-08 00:10:08,648 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 23 [2025-03-08 00:10:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:10:08,648 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2025-03-08 00:10:08,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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) [2025-03-08 00:10:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2025-03-08 00:10:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-08 00:10:08,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:10:08,649 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:10:08,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 00:10:08,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:08,851 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:10:08,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:10:08,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1028162570, now seen corresponding path program 5 times [2025-03-08 00:10:08,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:10:08,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683441455] [2025-03-08 00:10:08,852 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 00:10:08,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:10:08,880 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 12 equivalence classes. [2025-03-08 00:10:08,999 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 35 of 35 statements. [2025-03-08 00:10:08,999 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-03-08 00:10:08,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:10:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-08 00:10:09,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:10:09,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683441455] [2025-03-08 00:10:09,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683441455] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:10:09,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033492546] [2025-03-08 00:10:09,524 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 00:10:09,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:10:09,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:10:09,527 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) [2025-03-08 00:10:09,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 00:10:09,595 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 12 equivalence classes.