./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c --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-cav19/array_init_pair_symmetr.c -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 94a3c9718d8b0819c3a22a45f77fd4dac96406e3aa7eff964888695d6121efac --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 00:40:55,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 00:40:55,151 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 00:40:55,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 00:40:55,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 00:40:55,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 00:40:55,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 00:40:55,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 00:40:55,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 00:40:55,178 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 00:40:55,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 00:40:55,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 00:40:55,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 00:40:55,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 00:40:55,179 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 00:40:55,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:40:55,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 00:40:55,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 00:40:55,180 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 -> 94a3c9718d8b0819c3a22a45f77fd4dac96406e3aa7eff964888695d6121efac [2025-03-08 00:40:55,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 00:40:55,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 00:40:55,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 00:40:55,399 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 00:40:55,400 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 00:40:55,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c [2025-03-08 00:40:56,547 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b2e82597/52100924ca4c464d8b18a7aa5232a7bf/FLAGa5c943cf3 [2025-03-08 00:40:56,797 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 00:40:56,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_symmetr.c [2025-03-08 00:40:56,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b2e82597/52100924ca4c464d8b18a7aa5232a7bf/FLAGa5c943cf3 [2025-03-08 00:40:56,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b2e82597/52100924ca4c464d8b18a7aa5232a7bf [2025-03-08 00:40:56,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 00:40:56,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 00:40:56,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 00:40:56,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 00:40:56,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 00:40:56,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:56,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5d3808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56, skipping insertion in model container [2025-03-08 00:40:56,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:56,842 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 00:40:56,943 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-cav19/array_init_pair_symmetr.c[414,427] [2025-03-08 00:40:56,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:40:56,963 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 00:40:56,972 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-cav19/array_init_pair_symmetr.c[414,427] [2025-03-08 00:40:56,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:40:56,988 INFO L204 MainTranslator]: Completed translation [2025-03-08 00:40:56,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56 WrapperNode [2025-03-08 00:40:56,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 00:40:56,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 00:40:56,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 00:40:56,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 00:40:56,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:56,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,009 INFO L138 Inliner]: procedures = 15, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2025-03-08 00:40:57,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 00:40:57,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 00:40:57,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 00:40:57,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 00:40:57,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,020 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,030 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2025-03-08 00:40:57,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,035 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 00:40:57,038 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 00:40:57,038 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 00:40:57,038 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 00:40:57,039 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (1/1) ... [2025-03-08 00:40:57,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:40:57,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:40:57,061 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 00:40:57,063 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 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 00:40:57,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 00:40:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 00:40:57,127 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 00:40:57,129 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 00:40:57,234 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L14: 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;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2025-03-08 00:40:57,238 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-03-08 00:40:57,238 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 00:40:57,244 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 00:40:57,245 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 00:40:57,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:40:57 BoogieIcfgContainer [2025-03-08 00:40:57,245 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 00:40:57,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 00:40:57,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 00:40:57,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 00:40:57,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:40:56" (1/3) ... [2025-03-08 00:40:57,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c56edf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:40:57, skipping insertion in model container [2025-03-08 00:40:57,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:40:56" (2/3) ... [2025-03-08 00:40:57,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c56edf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:40:57, skipping insertion in model container [2025-03-08 00:40:57,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:40:57" (3/3) ... [2025-03-08 00:40:57,252 INFO L128 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr.c [2025-03-08 00:40:57,263 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 00:40:57,265 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_init_pair_symmetr.c that has 1 procedures, 14 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-08 00:40:57,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 00:40:57,308 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;@5ddbecb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 00:40:57,309 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 00:40:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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) [2025-03-08 00:40:57,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 00:40:57,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:40:57,316 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:40:57,316 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:40:57,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:40:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1036092010, now seen corresponding path program 1 times [2025-03-08 00:40:57,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:40:57,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111038588] [2025-03-08 00:40:57,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:40:57,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:40:57,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 00:40:57,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 00:40:57,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:40:57,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:40:57,531 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 00:40:57,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:40:57,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111038588] [2025-03-08 00:40:57,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111038588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:40:57,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:40:57,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:40:57,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459291232] [2025-03-08 00:40:57,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:40:57,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:40:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:40:57,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:40:57,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:40:57,550 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 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) Second operand has 4 states, 4 states have (on average 1.75) 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 00:40:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:40:57,591 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2025-03-08 00:40:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:40:57,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) 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 00:40:57,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:40:57,598 INFO L225 Difference]: With dead ends: 30 [2025-03-08 00:40:57,598 INFO L226 Difference]: Without dead ends: 15 [2025-03-08 00:40:57,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:40:57,601 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:40:57,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:40:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-03-08 00:40:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2025-03-08 00:40:57,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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 00:40:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2025-03-08 00:40:57,622 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2025-03-08 00:40:57,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:40:57,623 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2025-03-08 00:40:57,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) 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 00:40:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2025-03-08 00:40:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 00:40:57,624 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:40:57,624 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:40:57,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 00:40:57,625 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:40:57,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:40:57,625 INFO L85 PathProgramCache]: Analyzing trace with hash -672520757, now seen corresponding path program 1 times [2025-03-08 00:40:57,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:40:57,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097269111] [2025-03-08 00:40:57,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:40:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:40:57,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-08 00:40:57,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 00:40:57,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:40:57,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:40:57,751 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 00:40:57,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:40:57,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097269111] [2025-03-08 00:40:57,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097269111] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:40:57,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172391656] [2025-03-08 00:40:57,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:40:57,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:40:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:40:57,754 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 00:40:57,756 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 00:40:57,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-08 00:40:57,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 00:40:57,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:40:57,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:40:57,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 00:40:57,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:40:57,914 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 00:40:57,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:40:57,955 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 00:40:57,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172391656] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:40:57,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:40:57,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-08 00:40:57,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925809856] [2025-03-08 00:40:57,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:40:57,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 00:40:57,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:40:57,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 00:40:57,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-03-08 00:40:57,958 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 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) [2025-03-08 00:40:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:40:58,067 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2025-03-08 00:40:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 00:40:58,068 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 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) Word has length 11 [2025-03-08 00:40:58,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:40:58,068 INFO L225 Difference]: With dead ends: 43 [2025-03-08 00:40:58,068 INFO L226 Difference]: Without dead ends: 36 [2025-03-08 00:40:58,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-03-08 00:40:58,069 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 70 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:40:58,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 17 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:40:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-08 00:40:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2025-03-08 00:40:58,072 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 00:40:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2025-03-08 00:40:58,073 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 11 [2025-03-08 00:40:58,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:40:58,073 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2025-03-08 00:40:58,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 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) [2025-03-08 00:40:58,073 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2025-03-08 00:40:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-08 00:40:58,075 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:40:58,075 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:40:58,081 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 00:40:58,279 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 00:40:58,280 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:40:58,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:40:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1118829398, now seen corresponding path program 2 times [2025-03-08 00:40:58,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:40:58,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520909664] [2025-03-08 00:40:58,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:40:58,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:40:58,295 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-08 00:40:58,328 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 00:40:58,328 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:40:58,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:40:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 00:40:58,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:40:58,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520909664] [2025-03-08 00:40:58,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520909664] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:40:58,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619252658] [2025-03-08 00:40:58,504 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:40:58,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:40:58,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:40:58,508 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 00:40:58,509 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 00:40:58,556 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-08 00:40:58,585 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 00:40:58,585 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:40:58,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:40:58,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 00:40:58,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:40:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 00:40:58,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:40:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 00:40:58,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619252658] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:40:58,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:40:58,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-03-08 00:40:58,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783569351] [2025-03-08 00:40:58,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:40:58,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 00:40:58,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:40:58,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 00:40:58,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2025-03-08 00:40:58,792 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 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 00:40:58,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:40:58,968 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2025-03-08 00:40:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 00:40:58,968 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 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 00:40:58,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:40:58,969 INFO L225 Difference]: With dead ends: 100 [2025-03-08 00:40:58,970 INFO L226 Difference]: Without dead ends: 90 [2025-03-08 00:40:58,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2025-03-08 00:40:58,971 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 154 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:40:58,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 57 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:40:58,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-03-08 00:40:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 49. [2025-03-08 00:40:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 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 00:40:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2025-03-08 00:40:58,979 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 23 [2025-03-08 00:40:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:40:58,979 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2025-03-08 00:40:58,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 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 00:40:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2025-03-08 00:40:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-08 00:40:58,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:40:58,980 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:40:58,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 00:40:59,180 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 00:40:59,180 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:40:59,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:40:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 383601674, now seen corresponding path program 3 times [2025-03-08 00:40:59,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:40:59,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194268792] [2025-03-08 00:40:59,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:40:59,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:40:59,199 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 11 equivalence classes. [2025-03-08 00:40:59,267 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 32 of 47 statements. [2025-03-08 00:40:59,267 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 00:40:59,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:40:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-08 00:40:59,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:40:59,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194268792] [2025-03-08 00:40:59,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194268792] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:40:59,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819601342] [2025-03-08 00:40:59,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:40:59,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:40:59,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:40:59,480 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 00:40:59,481 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 00:40:59,543 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 11 equivalence classes. [2025-03-08 00:40:59,668 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 32 of 47 statements. [2025-03-08 00:40:59,668 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 00:40:59,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:40:59,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 00:40:59,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:40:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 28 proven. 55 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-03-08 00:40:59,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:41:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-03-08 00:41:00,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819601342] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:41:00,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:41:00,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 40 [2025-03-08 00:41:00,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047802926] [2025-03-08 00:41:00,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:41:00,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-08 00:41:00,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:41:00,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-08 00:41:00,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=949, Unknown=0, NotChecked=0, Total=1640 [2025-03-08 00:41:00,183 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 40 states have internal predecessors, (55), 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 00:41:00,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:41:00,605 INFO L93 Difference]: Finished difference Result 214 states and 241 transitions. [2025-03-08 00:41:00,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 00:41:00,605 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 40 states have internal predecessors, (55), 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 47 [2025-03-08 00:41:00,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:41:00,606 INFO L225 Difference]: With dead ends: 214 [2025-03-08 00:41:00,607 INFO L226 Difference]: Without dead ends: 198 [2025-03-08 00:41:00,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1001, Invalid=1549, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 00:41:00,608 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 641 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 00:41:00,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 93 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 00:41:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-03-08 00:41:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 97. [2025-03-08 00:41:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.03125) internal successors, (99), 96 states have internal predecessors, (99), 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 00:41:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2025-03-08 00:41:00,617 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 47 [2025-03-08 00:41:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:41:00,617 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2025-03-08 00:41:00,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 40 states have internal predecessors, (55), 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 00:41:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2025-03-08 00:41:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 00:41:00,619 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:41:00,619 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:41:00,627 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 00:41:00,819 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 00:41:00,820 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:41:00,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:41:00,820 INFO L85 PathProgramCache]: Analyzing trace with hash 290620106, now seen corresponding path program 4 times [2025-03-08 00:41:00,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:41:00,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767263279] [2025-03-08 00:41:00,821 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:41:00,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:41:00,847 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 95 statements into 2 equivalence classes. [2025-03-08 00:41:01,002 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 00:41:01,002 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 00:41:01,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:41:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-03-08 00:41:01,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:41:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767263279] [2025-03-08 00:41:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767263279] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:41:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295735030] [2025-03-08 00:41:01,804 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:41:01,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:41:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:41:01,806 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 00:41:01,807 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 00:41:01,885 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 95 statements into 2 equivalence classes.