./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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/loop-industry-pattern/aiob_4.c.v+lh-reducer.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 9e5c7c8f34d0399e1ec13072e237ea7df9536407415bc8e3ff2e61c34b30de96 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 17:52:30,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 17:52:30,117 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 17:52:30,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 17:52:30,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 17:52:30,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 17:52:30,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 17:52:30,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 17:52:30,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 17:52:30,139 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 17:52:30,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 17:52:30,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 17:52:30,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 17:52:30,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 17:52:30,140 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 17:52:30,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 17:52:30,141 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 17:52:30,142 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:52:30,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 17:52:30,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 17:52:30,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 17:52:30,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 17:52:30,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 17:52:30,143 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 -> 9e5c7c8f34d0399e1ec13072e237ea7df9536407415bc8e3ff2e61c34b30de96 [2025-03-16 17:52:30,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 17:52:30,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 17:52:30,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 17:52:30,359 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 17:52:30,359 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 17:52:30,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2025-03-16 17:52:31,468 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a009e2ba6/3d5a1a36f536423a8166957393d178f6/FLAGe025aa3e3 [2025-03-16 17:52:31,745 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 17:52:31,748 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2025-03-16 17:52:31,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a009e2ba6/3d5a1a36f536423a8166957393d178f6/FLAGe025aa3e3 [2025-03-16 17:52:32,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a009e2ba6/3d5a1a36f536423a8166957393d178f6 [2025-03-16 17:52:32,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 17:52:32,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 17:52:32,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 17:52:32,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 17:52:32,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 17:52:32,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e0cfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32, skipping insertion in model container [2025-03-16 17:52:32,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 17:52:32,235 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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2025-03-16 17:52:32,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:52:32,260 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 17:52:32,322 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/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2025-03-16 17:52:32,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 17:52:32,338 INFO L204 MainTranslator]: Completed translation [2025-03-16 17:52:32,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32 WrapperNode [2025-03-16 17:52:32,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 17:52:32,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 17:52:32,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 17:52:32,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 17:52:32,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,389 INFO L138 Inliner]: procedures = 18, calls = 202, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 417 [2025-03-16 17:52:32,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 17:52:32,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 17:52:32,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 17:52:32,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 17:52:32,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,428 INFO L175 MemorySlicer]: Split 180 memory accesses to 5 slices as follows [2, 7, 2, 128, 41]. 71 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 7, 2, 0, 0]. The 127 writes are split as follows [0, 0, 0, 127, 0]. [2025-03-16 17:52:32,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,440 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 17:52:32,456 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 17:52:32,456 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 17:52:32,456 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 17:52:32,457 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (1/1) ... [2025-03-16 17:52:32,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 17:52:32,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:52:32,481 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) [2025-03-16 17:52:32,483 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 [2025-03-16 17:52:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-16 17:52:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-16 17:52:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-16 17:52:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-16 17:52:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-16 17:52:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 17:52:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 17:52:32,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 17:52:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 17:52:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 17:52:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-16 17:52:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-16 17:52:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 17:52:32,598 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 17:52:32,599 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 17:52:37,600 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L214: havoc main_~__tmp_3~0#1, main_~__VERIFIER_assert__Id_MCDC_92~1#1; [2025-03-16 17:52:37,600 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L173: call ULTIMATE.dealloc(main_~#Id_MCDC_89__Id_MCDC_95~0#1.base, main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset);havoc main_~#Id_MCDC_89__Id_MCDC_95~0#1.base, main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset;havoc main_~__tmp_1~0#1.base, main_~__tmp_1~0#1.offset, main_~Id_MCDC_89__Id_MCDC_88~0#1.base, main_~Id_MCDC_89__Id_MCDC_88~0#1.offset, main_~Id_MCDC_89__Id_MCDC_94~0#1.base, main_~Id_MCDC_89__Id_MCDC_94~0#1.offset, main_~#Id_MCDC_89__Id_MCDC_95~0#1.base, main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset, main_~Id_MCDC_89__Id_MCDC_96~0#1, main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.base, main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.offset, main_~Id_MCDC_89____CPAchecker_TMP_1~0#1;call ULTIMATE.dealloc(main_~#main__Id_MCDC_119~0#1.base, main_~#main__Id_MCDC_119~0#1.offset);havoc main_~#main__Id_MCDC_119~0#1.base, main_~#main__Id_MCDC_119~0#1.offset; [2025-03-16 17:52:37,600 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L198: havoc main_~Id_MCDC_89____CPAchecker_TMP_2~0#1;havoc main_~__tmp_2~0#1, main_~__VERIFIER_assert__Id_MCDC_92~0#1; [2025-03-16 17:52:37,639 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-03-16 17:52:37,639 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 17:52:37,644 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 17:52:37,644 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 17:52:37,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:52:37 BoogieIcfgContainer [2025-03-16 17:52:37,645 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 17:52:37,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 17:52:37,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 17:52:37,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 17:52:37,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 05:52:32" (1/3) ... [2025-03-16 17:52:37,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543eeb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:52:37, skipping insertion in model container [2025-03-16 17:52:37,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 05:52:32" (2/3) ... [2025-03-16 17:52:37,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543eeb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 05:52:37, skipping insertion in model container [2025-03-16 17:52:37,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 05:52:37" (3/3) ... [2025-03-16 17:52:37,651 INFO L128 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2025-03-16 17:52:37,660 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 17:52:37,661 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aiob_4.c.v+lh-reducer.c that has 1 procedures, 13 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-16 17:52:37,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 17:52:37,706 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;@11bf0f3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 17:52:37,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 17:52:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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) [2025-03-16 17:52:37,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 17:52:37,711 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:52:37,711 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:52:37,711 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:52:37,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:52:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash -869501642, now seen corresponding path program 1 times [2025-03-16 17:52:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:52:37,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307390070] [2025-03-16 17:52:37,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:52:37,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:52:41,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 17:52:42,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 17:52:42,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:52:42,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:52:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:52:42,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:52:42,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307390070] [2025-03-16 17:52:42,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307390070] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 17:52:42,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 17:52:42,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 17:52:42,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270438596] [2025-03-16 17:52:42,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 17:52:42,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 17:52:42,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:52:42,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 17:52:42,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 17:52:42,886 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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), 4 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) [2025-03-16 17:52:43,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:52:43,058 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2025-03-16 17:52:43,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 17:52:43,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2025-03-16 17:52:43,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:52:43,063 INFO L225 Difference]: With dead ends: 29 [2025-03-16 17:52:43,064 INFO L226 Difference]: Without dead ends: 16 [2025-03-16 17:52:43,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 17:52:43,067 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 17:52:43,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 33 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 17:52:43,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-03-16 17:52:43,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2025-03-16 17:52:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2025-03-16 17:52:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2025-03-16 17:52:43,085 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2025-03-16 17:52:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:52:43,085 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2025-03-16 17:52:43,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2025-03-16 17:52:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2025-03-16 17:52:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-16 17:52:43,085 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:52:43,086 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 17:52:43,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 17:52:43,086 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:52:43,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:52:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash -913971193, now seen corresponding path program 1 times [2025-03-16 17:52:43,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:52:43,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37440210] [2025-03-16 17:52:43,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:52:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:52:47,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-16 17:52:47,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-16 17:52:47,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:52:47,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:52:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:52:48,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:52:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37440210] [2025-03-16 17:52:48,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37440210] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:52:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253823854] [2025-03-16 17:52:48,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 17:52:48,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:52:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:52:48,086 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) [2025-03-16 17:52:48,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 17:52:52,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-16 17:53:36,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-16 17:53:36,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 17:53:36,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:53:36,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 17:53:36,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 17:53:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:53:36,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 17:53:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:53:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253823854] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 17:53:36,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 17:53:36,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-16 17:53:36,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930171410] [2025-03-16 17:53:36,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 17:53:36,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 17:53:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 17:53:36,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 17:53:36,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-16 17:53:36,895 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:53:40,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-16 17:53:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 17:53:42,245 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2025-03-16 17:53:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 17:53:42,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-16 17:53:42,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 17:53:42,246 INFO L225 Difference]: With dead ends: 33 [2025-03-16 17:53:42,247 INFO L226 Difference]: Without dead ends: 30 [2025-03-16 17:53:42,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2025-03-16 17:53:42,247 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-03-16 17:53:42,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 30 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2025-03-16 17:53:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-16 17:53:42,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2025-03-16 17:53:42,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 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) [2025-03-16 17:53:42,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2025-03-16 17:53:42,250 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 12 [2025-03-16 17:53:42,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 17:53:42,250 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2025-03-16 17:53:42,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 17:53:42,250 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2025-03-16 17:53:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-16 17:53:42,251 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 17:53:42,251 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2025-03-16 17:53:42,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 17:53:42,451 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 [2025-03-16 17:53:42,452 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 17:53:42,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 17:53:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash 331080310, now seen corresponding path program 2 times [2025-03-16 17:53:42,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 17:53:42,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975972632] [2025-03-16 17:53:42,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:53:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 17:53:46,652 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-16 17:53:46,762 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-16 17:53:46,762 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 17:53:46,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 17:53:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 17:53:47,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 17:53:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975972632] [2025-03-16 17:53:47,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975972632] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 17:53:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321590338] [2025-03-16 17:53:47,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 17:53:47,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 17:53:47,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 17:53:47,896 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) [2025-03-16 17:53:47,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 17:53:52,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes.