./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_partition_original_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_partition_original_ground.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c423fd522e95226e38270ab4d82928946afe4ab8940cfd611684a61e552aff6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:24:08,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:24:08,194 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:24:08,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:24:08,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:24:08,217 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:24:08,218 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:24:08,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:24:08,219 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:24:08,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:24:08,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:24:08,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:24:08,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:24:08,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:24:08,221 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:24:08,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:24:08,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:24:08,223 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:24:08,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:24:08,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:24:08,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:24:08,224 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:24:08,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:24:08,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:24:08,225 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:24:08,225 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:24:08,226 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:24:08,226 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:24:08,226 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:24:08,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:24:08,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:24:08,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:24:08,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:24:08,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:24:08,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:24:08,228 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:24:08,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:24:08,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:24:08,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:24:08,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:24:08,230 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:24:08,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:24:08,230 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c423fd522e95226e38270ab4d82928946afe4ab8940cfd611684a61e552aff6 [2024-11-16 02:24:08,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:24:08,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:24:08,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:24:08,498 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:24:08,499 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:24:08,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_partition_original_ground.i [2024-11-16 02:24:10,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:24:10,209 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:24:10,210 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_original_ground.i [2024-11-16 02:24:10,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69f549dc/9f97fd1283bd4c2c8d60bc67e29f6d64/FLAG81d58ccb6 [2024-11-16 02:24:10,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a69f549dc/9f97fd1283bd4c2c8d60bc67e29f6d64 [2024-11-16 02:24:10,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:24:10,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:24:10,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:24:10,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:24:10,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:24:10,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc6d135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10, skipping insertion in model container [2024-11-16 02:24:10,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:24:10,779 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_original_ground.i[827,840] [2024-11-16 02:24:10,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:24:10,803 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:24:10,815 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_original_ground.i[827,840] [2024-11-16 02:24:10,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:24:10,839 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:24:10,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10 WrapperNode [2024-11-16 02:24:10,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:24:10,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:24:10,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:24:10,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:24:10,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,870 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2024-11-16 02:24:10,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:24:10,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:24:10,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:24:10,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:24:10,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,900 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [2, 2, 4, 2]. 40 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]. [2024-11-16 02:24:10,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,906 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:24:10,913 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:24:10,913 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:24:10,913 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:24:10,914 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (1/1) ... [2024-11-16 02:24:10,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:24:10,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:10,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:24:10,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:24:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:24:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:24:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:24:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:24:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 02:24:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:24:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:24:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:24:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:24:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 02:24:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:24:11,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:24:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:24:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:24:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:24:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 02:24:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 02:24:11,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 02:24:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:24:11,141 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:24:11,143 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:24:11,328 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#aa~0#1.base, main_~#aa~0#1.offset);havoc main_~#aa~0#1.base, main_~#aa~0#1.offset;call ULTIMATE.dealloc(main_~#bb~0#1.base, main_~#bb~0#1.offset);havoc main_~#bb~0#1.base, main_~#bb~0#1.offset;call ULTIMATE.dealloc(main_~#cc~0#1.base, main_~#cc~0#1.offset);havoc main_~#cc~0#1.base, main_~#cc~0#1.offset; [2024-11-16 02:24:11,347 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-16 02:24:11,347 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:24:11,365 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:24:11,367 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:24:11,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:24:11 BoogieIcfgContainer [2024-11-16 02:24:11,368 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:24:11,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:24:11,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:24:11,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:24:11,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:24:10" (1/3) ... [2024-11-16 02:24:11,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9eb396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:24:11, skipping insertion in model container [2024-11-16 02:24:11,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:10" (2/3) ... [2024-11-16 02:24:11,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9eb396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:24:11, skipping insertion in model container [2024-11-16 02:24:11,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:24:11" (3/3) ... [2024-11-16 02:24:11,382 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_original_ground.i [2024-11-16 02:24:11,400 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:24:11,401 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:24:11,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:24:11,461 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;@5d81bf34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:24:11,462 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:24:11,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 02:24:11,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:11,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:11,474 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:11,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:11,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1783949312, now seen corresponding path program 1 times [2024-11-16 02:24:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:11,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128046427] [2024-11-16 02:24:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:11,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:24:11,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128046427] [2024-11-16 02:24:11,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128046427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:11,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:24:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:24:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832559365] [2024-11-16 02:24:11,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:11,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:24:11,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:24:11,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:24:11,698 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:11,737 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2024-11-16 02:24:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:24:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-16 02:24:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:11,747 INFO L225 Difference]: With dead ends: 57 [2024-11-16 02:24:11,747 INFO L226 Difference]: Without dead ends: 26 [2024-11-16 02:24:11,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:24:11,754 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:11,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-16 02:24:11,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-16 02:24:11,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-16 02:24:11,802 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 13 [2024-11-16 02:24:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:11,802 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-16 02:24:11,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-16 02:24:11,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 02:24:11,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:11,806 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:11,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:24:11,808 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:11,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash -127927141, now seen corresponding path program 1 times [2024-11-16 02:24:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:11,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523657279] [2024-11-16 02:24:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:11,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:24:11,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523657279] [2024-11-16 02:24:11,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523657279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:11,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:24:11,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:24:11,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7540518] [2024-11-16 02:24:11,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:11,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:24:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:24:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:24:11,971 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:11,985 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-11-16 02:24:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:24:11,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-16 02:24:11,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:11,986 INFO L225 Difference]: With dead ends: 50 [2024-11-16 02:24:11,987 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 02:24:11,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:24:11,988 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:11,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:11,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 02:24:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 02:24:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:11,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-16 02:24:11,995 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 15 [2024-11-16 02:24:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:11,996 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-16 02:24:11,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:11,996 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-16 02:24:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-16 02:24:11,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:11,997 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:11,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:24:11,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:11,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:11,999 INFO L85 PathProgramCache]: Analyzing trace with hash -306436484, now seen corresponding path program 1 times [2024-11-16 02:24:12,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:12,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629961665] [2024-11-16 02:24:12,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:24:12,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:12,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629961665] [2024-11-16 02:24:12,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629961665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:12,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261206297] [2024-11-16 02:24:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:12,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:12,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:12,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:12,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:24:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:12,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:24:12,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:24:12,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:24:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261206297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:12,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:24:12,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 02:24:12,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296363298] [2024-11-16 02:24:12,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:12,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:24:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:24:12,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:24:12,231 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:12,259 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-11-16 02:24:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:24:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-16 02:24:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:12,260 INFO L225 Difference]: With dead ends: 49 [2024-11-16 02:24:12,261 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 02:24:12,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:24:12,264 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:12,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 48 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 02:24:12,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-11-16 02:24:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-16 02:24:12,271 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 17 [2024-11-16 02:24:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:12,272 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-16 02:24:12,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-16 02:24:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 02:24:12,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:12,273 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:12,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:24:12,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:12,475 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:12,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1703227962, now seen corresponding path program 1 times [2024-11-16 02:24:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:12,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813924665] [2024-11-16 02:24:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:24:12,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:12,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813924665] [2024-11-16 02:24:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813924665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:12,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768010440] [2024-11-16 02:24:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:12,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:12,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:12,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:12,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:24:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:12,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:24:12,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:24:12,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:24:12,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768010440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:12,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:12,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:24:12,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043570898] [2024-11-16 02:24:12,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:12,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:24:12,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:24:12,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:24:12,704 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:12,728 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2024-11-16 02:24:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:24:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 02:24:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:12,730 INFO L225 Difference]: With dead ends: 60 [2024-11-16 02:24:12,730 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:24:12,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:24:12,732 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:12,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:24:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 02:24:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-16 02:24:12,742 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 21 [2024-11-16 02:24:12,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:12,746 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-16 02:24:12,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-16 02:24:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:24:12,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:12,748 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:12,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:24:12,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 02:24:12,949 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:12,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash -755012387, now seen corresponding path program 2 times [2024-11-16 02:24:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458650141] [2024-11-16 02:24:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:24:13,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:13,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458650141] [2024-11-16 02:24:13,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458650141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:13,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214163710] [2024-11-16 02:24:13,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:24:13,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:13,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:13,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:13,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:24:13,176 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:24:13,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:13,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:24:13,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:24:13,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:24:13,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214163710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:13,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:13,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:24:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91515576] [2024-11-16 02:24:13,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:13,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:24:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:24:13,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:24:13,287 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:13,341 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2024-11-16 02:24:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:24:13,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-16 02:24:13,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:13,342 INFO L225 Difference]: With dead ends: 65 [2024-11-16 02:24:13,342 INFO L226 Difference]: Without dead ends: 48 [2024-11-16 02:24:13,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:24:13,344 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:13,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-16 02:24:13,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-16 02:24:13,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-16 02:24:13,358 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 27 [2024-11-16 02:24:13,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:13,359 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-16 02:24:13,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-16 02:24:13,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 02:24:13,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:13,360 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:13,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:24:13,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:13,565 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:13,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:13,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1557027223, now seen corresponding path program 3 times [2024-11-16 02:24:13,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609547762] [2024-11-16 02:24:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 02:24:13,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609547762] [2024-11-16 02:24:13,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609547762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136639973] [2024-11-16 02:24:13,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:24:13,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:13,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:13,719 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:13,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:24:13,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 02:24:13,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:13,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 02:24:13,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:24:13,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:24:14,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136639973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:14,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:14,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2024-11-16 02:24:14,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540733867] [2024-11-16 02:24:14,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:14,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 02:24:14,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 02:24:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:24:14,109 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:14,280 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2024-11-16 02:24:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 02:24:14,281 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 02:24:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:14,282 INFO L225 Difference]: With dead ends: 110 [2024-11-16 02:24:14,282 INFO L226 Difference]: Without dead ends: 74 [2024-11-16 02:24:14,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=345, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:24:14,283 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 27 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:14,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 165 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-16 02:24:14,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-16 02:24:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2024-11-16 02:24:14,324 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 39 [2024-11-16 02:24:14,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:14,324 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2024-11-16 02:24:14,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2024-11-16 02:24:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 02:24:14,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:14,326 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:14,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:24:14,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:14,527 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:14,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1213767188, now seen corresponding path program 4 times [2024-11-16 02:24:14,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:14,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390353415] [2024-11-16 02:24:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-16 02:24:14,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:14,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390353415] [2024-11-16 02:24:14,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390353415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:14,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736673693] [2024-11-16 02:24:14,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:24:14,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:14,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:14,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:14,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:24:14,860 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:24:14,860 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:14,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:24:14,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:24:15,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 02:24:15,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736673693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:15,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:15,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 30 [2024-11-16 02:24:15,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474731022] [2024-11-16 02:24:15,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:15,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 02:24:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 02:24:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=567, Unknown=0, NotChecked=0, Total=870 [2024-11-16 02:24:15,398 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:15,598 INFO L93 Difference]: Finished difference Result 184 states and 236 transitions. [2024-11-16 02:24:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 02:24:15,599 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 02:24:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:15,600 INFO L225 Difference]: With dead ends: 184 [2024-11-16 02:24:15,600 INFO L226 Difference]: Without dead ends: 124 [2024-11-16 02:24:15,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=483, Invalid=777, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 02:24:15,602 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 53 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:15,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 176 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-16 02:24:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-16 02:24:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 120 states have (on average 1.2166666666666666) internal successors, (146), 120 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2024-11-16 02:24:15,616 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 65 [2024-11-16 02:24:15,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:15,616 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2024-11-16 02:24:15,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.033333333333333) internal successors, (121), 30 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:15,617 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2024-11-16 02:24:15,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-16 02:24:15,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:15,622 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:15,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 02:24:15,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:15,826 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:15,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1720165771, now seen corresponding path program 5 times [2024-11-16 02:24:15,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:15,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086622783] [2024-11-16 02:24:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-16 02:24:16,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:16,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086622783] [2024-11-16 02:24:16,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086622783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:16,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208445544] [2024-11-16 02:24:16,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:24:16,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:16,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:16,122 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:16,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:24:19,609 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-16 02:24:19,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:19,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 02:24:19,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 02:24:20,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 02:24:21,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208445544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:21,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:21,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 25, 25] total 55 [2024-11-16 02:24:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238356508] [2024-11-16 02:24:21,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:21,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-16 02:24:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-16 02:24:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1163, Invalid=1807, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 02:24:21,116 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 55 states, 55 states have (on average 3.981818181818182) internal successors, (219), 55 states have internal predecessors, (219), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:21,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:21,516 INFO L93 Difference]: Finished difference Result 330 states and 430 transitions. [2024-11-16 02:24:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-16 02:24:21,517 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.981818181818182) internal successors, (219), 55 states have internal predecessors, (219), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-16 02:24:21,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:21,518 INFO L225 Difference]: With dead ends: 330 [2024-11-16 02:24:21,518 INFO L226 Difference]: Without dead ends: 222 [2024-11-16 02:24:21,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1548, Invalid=2234, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 02:24:21,521 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 152 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:21,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 203 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:24:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-16 02:24:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-11-16 02:24:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.2293577981651376) internal successors, (268), 218 states have internal predecessors, (268), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 272 transitions. [2024-11-16 02:24:21,534 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 272 transitions. Word has length 115 [2024-11-16 02:24:21,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:21,535 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 272 transitions. [2024-11-16 02:24:21,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.981818181818182) internal successors, (219), 55 states have internal predecessors, (219), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 272 transitions. [2024-11-16 02:24:21,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-16 02:24:21,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:21,538 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:21,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:24:21,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:21,739 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:21,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:21,740 INFO L85 PathProgramCache]: Analyzing trace with hash -209021530, now seen corresponding path program 6 times [2024-11-16 02:24:21,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:21,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065261739] [2024-11-16 02:24:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:21,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4288 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:22,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:22,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065261739] [2024-11-16 02:24:22,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065261739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:22,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381325044] [2024-11-16 02:24:22,132 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:24:22,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:22,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:22,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:22,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:24:23,445 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-16 02:24:23,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:23,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:24:23,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4288 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:23,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4288 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2024-11-16 02:24:23,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381325044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:23,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:23,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 21 [2024-11-16 02:24:23,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587121799] [2024-11-16 02:24:23,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:23,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 02:24:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 02:24:23,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=244, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:24:23,656 INFO L87 Difference]: Start difference. First operand 222 states and 272 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:23,880 INFO L93 Difference]: Finished difference Result 444 states and 552 transitions. [2024-11-16 02:24:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 02:24:23,880 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2024-11-16 02:24:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:23,882 INFO L225 Difference]: With dead ends: 444 [2024-11-16 02:24:23,882 INFO L226 Difference]: Without dead ends: 240 [2024-11-16 02:24:23,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=497, Invalid=835, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 02:24:23,886 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:23,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 173 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:23,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-16 02:24:23,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-16 02:24:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 1.2118644067796611) internal successors, (286), 236 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 290 transitions. [2024-11-16 02:24:23,916 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 290 transitions. Word has length 213 [2024-11-16 02:24:23,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:23,919 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 290 transitions. [2024-11-16 02:24:23,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:23,920 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 290 transitions. [2024-11-16 02:24:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-16 02:24:23,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:23,927 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:23,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:24:24,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:24,128 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:24,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:24,128 INFO L85 PathProgramCache]: Analyzing trace with hash -613791025, now seen corresponding path program 7 times [2024-11-16 02:24:24,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:24,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990645151] [2024-11-16 02:24:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:24,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4504 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:24,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:24,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990645151] [2024-11-16 02:24:24,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990645151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:24,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362077294] [2024-11-16 02:24:24,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:24:24,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:24,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:24,861 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:24,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:24:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:25,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 02:24:25,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4504 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:25,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4504 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:25,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362077294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:25,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:25,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-11-16 02:24:25,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155064195] [2024-11-16 02:24:25,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:25,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-16 02:24:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-16 02:24:25,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 02:24:25,582 INFO L87 Difference]: Start difference. First operand 240 states and 290 transitions. Second operand has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:25,631 INFO L93 Difference]: Finished difference Result 480 states and 597 transitions. [2024-11-16 02:24:25,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-16 02:24:25,632 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2024-11-16 02:24:25,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:25,634 INFO L225 Difference]: With dead ends: 480 [2024-11-16 02:24:25,634 INFO L226 Difference]: Without dead ends: 276 [2024-11-16 02:24:25,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 02:24:25,637 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:25,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-16 02:24:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-11-16 02:24:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 1.1838235294117647) internal successors, (322), 272 states have internal predecessors, (322), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 326 transitions. [2024-11-16 02:24:25,657 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 326 transitions. Word has length 231 [2024-11-16 02:24:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:25,658 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 326 transitions. [2024-11-16 02:24:25,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:25,659 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 326 transitions. [2024-11-16 02:24:25,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-16 02:24:25,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:25,663 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:25,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:24:25,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 02:24:25,864 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:25,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 62553185, now seen corresponding path program 8 times [2024-11-16 02:24:25,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983495017] [2024-11-16 02:24:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5422 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:27,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:27,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983495017] [2024-11-16 02:24:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983495017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:27,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354296993] [2024-11-16 02:24:27,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:24:27,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:27,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:27,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:27,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:24:27,812 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:24:27,813 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:27,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 02:24:27,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5422 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:27,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5422 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:29,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354296993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:29,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:29,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 73 [2024-11-16 02:24:29,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249090221] [2024-11-16 02:24:29,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:29,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-16 02:24:29,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-16 02:24:29,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2024-11-16 02:24:29,600 INFO L87 Difference]: Start difference. First operand 276 states and 326 transitions. Second operand has 73 states, 73 states have (on average 2.1780821917808217) internal successors, (159), 73 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:29,699 INFO L93 Difference]: Finished difference Result 552 states and 687 transitions. [2024-11-16 02:24:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-16 02:24:29,700 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.1780821917808217) internal successors, (159), 73 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2024-11-16 02:24:29,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:29,702 INFO L225 Difference]: With dead ends: 552 [2024-11-16 02:24:29,702 INFO L226 Difference]: Without dead ends: 348 [2024-11-16 02:24:29,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2024-11-16 02:24:29,706 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:29,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 230 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-16 02:24:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2024-11-16 02:24:29,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 344 states have (on average 1.1453488372093024) internal successors, (394), 344 states have internal predecessors, (394), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:24:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 398 transitions. [2024-11-16 02:24:29,720 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 398 transitions. Word has length 267 [2024-11-16 02:24:29,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:29,720 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 398 transitions. [2024-11-16 02:24:29,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.1780821917808217) internal successors, (159), 73 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 398 transitions. [2024-11-16 02:24:29,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-11-16 02:24:29,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:29,725 INFO L215 NwaCegarLoop]: trace histogram [71, 70, 47, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:29,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 02:24:29,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:29,930 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:29,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:29,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1114784635, now seen corresponding path program 9 times [2024-11-16 02:24:29,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:29,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014391207] [2024-11-16 02:24:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:29,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-16 02:24:34,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:34,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014391207] [2024-11-16 02:24:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014391207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875709922] [2024-11-16 02:24:34,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:24:34,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:34,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:34,377 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:34,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process