./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_compareModified_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_compareModified_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 ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 17:48:59,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 17:48:59,654 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 17:48:59,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 17:48:59,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 17:48:59,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 17:48:59,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 17:48:59,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 17:48:59,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 17:48:59,689 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 17:48:59,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 17:48:59,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 17:48:59,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 17:48:59,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 17:48:59,692 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 17:48:59,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 17:48:59,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 17:48:59,693 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 17:48:59,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 17:48:59,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 17:48:59,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 17:48:59,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 17:48:59,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 17:48:59,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 17:48:59,694 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 17:48:59,694 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 17:48:59,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 17:48:59,695 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 17:48:59,695 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 17:48:59,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 17:48:59,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 17:48:59,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 17:48:59,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:48:59,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 17:48:59,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 17:48:59,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 17:48:59,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 17:48:59,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 17:48:59,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 17:48:59,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 17:48:59,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 17:48:59,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 17:48:59,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e [2024-11-09 17:48:59,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 17:48:59,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 17:48:59,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 17:48:59,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 17:48:59,941 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 17:48:59,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2024-11-09 17:49:01,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 17:49:01,347 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 17:49:01,348 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2024-11-09 17:49:01,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/158cc5cf8/7f6bc4b355e04551973b8543c02d6b89/FLAG8f1923d00 [2024-11-09 17:49:01,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/158cc5cf8/7f6bc4b355e04551973b8543c02d6b89 [2024-11-09 17:49:01,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 17:49:01,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 17:49:01,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 17:49:01,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 17:49:01,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 17:49:01,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:49:01" (1/1) ... [2024-11-09 17:49:01,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c391fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:01, skipping insertion in model container [2024-11-09 17:49:01,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:49:01" (1/1) ... [2024-11-09 17:49:01,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 17:49:01,951 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_compareModified_ground.i[824,837] [2024-11-09 17:49:01,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:49:01,978 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 17:49:01,987 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_compareModified_ground.i[824,837] [2024-11-09 17:49:01,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:49:02,015 INFO L204 MainTranslator]: Completed translation [2024-11-09 17:49:02,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02 WrapperNode [2024-11-09 17:49:02,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 17:49:02,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 17:49:02,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 17:49:02,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 17:49:02,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,042 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2024-11-09 17:49:02,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 17:49:02,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 17:49:02,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 17:49:02,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 17:49:02,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,055 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,069 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 3, 2, 5]. 42 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]. [2024-11-09 17:49:02,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,073 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 17:49:02,081 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 17:49:02,081 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 17:49:02,081 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 17:49:02,082 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (1/1) ... [2024-11-09 17:49:02,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:49:02,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:02,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 17:49:02,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 17:49:02,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 17:49:02,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 17:49:02,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 17:49:02,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 17:49:02,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 17:49:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 17:49:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 17:49:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 17:49:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 17:49:02,220 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 17:49:02,221 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 17:49:02,370 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2024-11-09 17:49:02,388 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-09 17:49:02,388 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 17:49:02,422 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 17:49:02,423 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 17:49:02,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:49:02 BoogieIcfgContainer [2024-11-09 17:49:02,423 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 17:49:02,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 17:49:02,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 17:49:02,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 17:49:02,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:49:01" (1/3) ... [2024-11-09 17:49:02,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e5d7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:49:02, skipping insertion in model container [2024-11-09 17:49:02,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:49:02" (2/3) ... [2024-11-09 17:49:02,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e5d7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:49:02, skipping insertion in model container [2024-11-09 17:49:02,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:49:02" (3/3) ... [2024-11-09 17:49:02,429 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compareModified_ground.i [2024-11-09 17:49:02,443 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 17:49:02,443 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 17:49:02,492 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 17:49:02,502 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;@729b1eb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 17:49:02,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 17:49:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 28 states have internal predecessors, (39), 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) [2024-11-09 17:49:02,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 17:49:02,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:02,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:02,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:02,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1744749681, now seen corresponding path program 1 times [2024-11-09 17:49:02,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:02,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014767799] [2024-11-09 17:49:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:02,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:49:02,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:02,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014767799] [2024-11-09 17:49:02,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014767799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:49:02,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:49:02,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 17:49:02,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716445245] [2024-11-09 17:49:02,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:49:02,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 17:49:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:02,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 17:49:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:49:02,699 INFO L87 Difference]: Start difference. First operand has 32 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 28 states have internal predecessors, (39), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-11-09 17:49:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:02,715 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2024-11-09 17:49:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 17:49:02,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 14 [2024-11-09 17:49:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:02,722 INFO L225 Difference]: With dead ends: 59 [2024-11-09 17:49:02,722 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 17:49:02,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:49:02,726 INFO L432 NwaCegarLoop]: 37 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, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:02,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 17:49:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 17:49:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 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) [2024-11-09 17:49:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-09 17:49:02,752 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 14 [2024-11-09 17:49:02,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:02,753 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-09 17:49:02,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-11-09 17:49:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-09 17:49:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 17:49:02,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:02,754 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:02,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 17:49:02,755 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:02,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:02,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1110657684, now seen corresponding path program 1 times [2024-11-09 17:49:02,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:02,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456178237] [2024-11-09 17:49:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:02,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:49:02,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:02,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456178237] [2024-11-09 17:49:02,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456178237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:49:02,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:49:02,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 17:49:02,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669551081] [2024-11-09 17:49:02,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:49:02,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:49:02,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:02,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:49:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:49:02,836 INFO L87 Difference]: Start difference. First operand 27 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) [2024-11-09 17:49:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:02,849 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-11-09 17:49:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:49:02,850 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 16 [2024-11-09 17:49:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:02,850 INFO L225 Difference]: With dead ends: 52 [2024-11-09 17:49:02,850 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 17:49:02,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:49:02,852 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:02,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:02,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 17:49:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-09 17:49:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.24) internal successors, (31), 25 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) [2024-11-09 17:49:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-09 17:49:02,861 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 16 [2024-11-09 17:49:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:02,861 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-09 17:49:02,862 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) [2024-11-09 17:49:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-09 17:49:02,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 17:49:02,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:02,863 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:02,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 17:49:02,864 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:02,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash 584310035, now seen corresponding path program 1 times [2024-11-09 17:49:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:02,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031733920] [2024-11-09 17:49:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:02,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:49:02,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:02,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031733920] [2024-11-09 17:49:02,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031733920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:02,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271924480] [2024-11-09 17:49:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:02,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:02,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:02,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:02,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 17:49:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:03,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 17:49:03,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:03,041 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 17:49:03,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271924480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:49:03,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 17:49:03,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 17:49:03,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791992566] [2024-11-09 17:49:03,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:49:03,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:49:03,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:03,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:49:03,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:49:03,046 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-11-09 17:49:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:03,065 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-11-09 17:49:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:49:03,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 18 [2024-11-09 17:49:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:03,067 INFO L225 Difference]: With dead ends: 51 [2024-11-09 17:49:03,067 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 17:49:03,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:49:03,068 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:03,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 17:49:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-11-09 17:49:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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) [2024-11-09 17:49:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-09 17:49:03,074 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 18 [2024-11-09 17:49:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:03,074 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-09 17:49:03,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-11-09 17:49:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-09 17:49:03,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 17:49:03,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:03,076 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:03,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 17:49:03,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:03,277 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:03,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash 889330069, now seen corresponding path program 1 times [2024-11-09 17:49:03,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:03,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110748317] [2024-11-09 17:49:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:03,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:03,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110748317] [2024-11-09 17:49:03,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110748317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:03,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970501564] [2024-11-09 17:49:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:03,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:03,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:03,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:03,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 17:49:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:03,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:49:03,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:03,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 17:49:03,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970501564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:49:03,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 17:49:03,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 17:49:03,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358858373] [2024-11-09 17:49:03,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:49:03,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:49:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:03,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:49:03,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:49:03,446 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-09 17:49:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:03,456 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2024-11-09 17:49:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:49:03,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 22 [2024-11-09 17:49:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:03,457 INFO L225 Difference]: With dead ends: 53 [2024-11-09 17:49:03,457 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 17:49:03,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:49:03,458 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:03,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 65 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:03,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 17:49:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 17:49:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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) [2024-11-09 17:49:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-09 17:49:03,463 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 22 [2024-11-09 17:49:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:03,464 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-09 17:49:03,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-09 17:49:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-09 17:49:03,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 17:49:03,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:03,465 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:03,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 17:49:03,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 17:49:03,666 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:03,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash 595927062, now seen corresponding path program 1 times [2024-11-09 17:49:03,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:03,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274405408] [2024-11-09 17:49:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:03,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:03,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274405408] [2024-11-09 17:49:03,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274405408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433743689] [2024-11-09 17:49:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:03,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:03,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:03,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 17:49:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:03,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:49:03,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:03,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:49:03,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433743689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:03,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:03,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:49:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667333561] [2024-11-09 17:49:03,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:03,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:49:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:49:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:49:03,886 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2024-11-09 17:49:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:03,909 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2024-11-09 17:49:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:49:03,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 22 [2024-11-09 17:49:03,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:03,912 INFO L225 Difference]: With dead ends: 74 [2024-11-09 17:49:03,912 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 17:49:03,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:49:03,913 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:03,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 17:49:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-09 17:49:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 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) [2024-11-09 17:49:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-09 17:49:03,919 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 22 [2024-11-09 17:49:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:03,919 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-09 17:49:03,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2024-11-09 17:49:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-09 17:49:03,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 17:49:03,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:03,922 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:03,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 17:49:04,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:04,127 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:04,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1376778899, now seen corresponding path program 2 times [2024-11-09 17:49:04,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:04,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401859640] [2024-11-09 17:49:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:04,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:49:04,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:04,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401859640] [2024-11-09 17:49:04,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401859640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:04,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828835169] [2024-11-09 17:49:04,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:49:04,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:04,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:04,190 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:04,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 17:49:04,248 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:49:04,248 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:04,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:49:04,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:49:04,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:49:04,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828835169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:04,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:04,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:49:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597770635] [2024-11-09 17:49:04,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:04,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:49:04,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:49:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:49:04,327 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2024-11-09 17:49:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:04,359 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2024-11-09 17:49:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:49:04,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 28 [2024-11-09 17:49:04,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:04,360 INFO L225 Difference]: With dead ends: 86 [2024-11-09 17:49:04,361 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 17:49:04,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:49:04,362 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:04,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 17:49:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-09 17:49:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 62 states have internal predecessors, (75), 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) [2024-11-09 17:49:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2024-11-09 17:49:04,374 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 28 [2024-11-09 17:49:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:04,374 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2024-11-09 17:49:04,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2024-11-09 17:49:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2024-11-09 17:49:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 17:49:04,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:04,375 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:04,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 17:49:04,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:04,576 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:04,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:04,576 INFO L85 PathProgramCache]: Analyzing trace with hash -938567908, now seen corresponding path program 3 times [2024-11-09 17:49:04,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:04,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567539908] [2024-11-09 17:49:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 17:49:04,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:04,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567539908] [2024-11-09 17:49:04,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567539908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:04,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175646137] [2024-11-09 17:49:04,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:49:04,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:04,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:04,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:04,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 17:49:04,783 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 17:49:04,783 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:04,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 17:49:04,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:05,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 17:49:05,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 17:49:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-09 17:49:05,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:05,253 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 17:49:05,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2024-11-09 17:49:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-09 17:49:05,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175646137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:05,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:05,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 18 [2024-11-09 17:49:05,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885662275] [2024-11-09 17:49:05,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:05,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 17:49:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 17:49:05,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-09 17:49:05,280 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:05,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:05,523 INFO L93 Difference]: Finished difference Result 152 states and 185 transitions. [2024-11-09 17:49:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 17:49:05,524 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-09 17:49:05,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:05,524 INFO L225 Difference]: With dead ends: 152 [2024-11-09 17:49:05,524 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 17:49:05,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2024-11-09 17:49:05,525 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:05,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 286 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:49:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 17:49:05,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2024-11-09 17:49:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 70 states have internal predecessors, (82), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 17:49:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2024-11-09 17:49:05,534 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 40 [2024-11-09 17:49:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:05,534 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2024-11-09 17:49:05,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2024-11-09 17:49:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 17:49:05,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:05,535 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:05,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 17:49:05,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:05,740 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:05,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash -981485406, now seen corresponding path program 1 times [2024-11-09 17:49:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271396203] [2024-11-09 17:49:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 17:49:05,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:05,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271396203] [2024-11-09 17:49:05,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271396203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:05,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918536112] [2024-11-09 17:49:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:05,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:05,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:05,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:05,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 17:49:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:05,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 17:49:05,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 17:49:05,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 17:49:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918536112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:06,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:06,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 17:49:06,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653981367] [2024-11-09 17:49:06,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:06,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 17:49:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:06,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 17:49:06,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-09 17:49:06,019 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 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) [2024-11-09 17:49:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:06,041 INFO L93 Difference]: Finished difference Result 150 states and 182 transitions. [2024-11-09 17:49:06,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 17:49:06,041 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 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 43 [2024-11-09 17:49:06,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:06,043 INFO L225 Difference]: With dead ends: 150 [2024-11-09 17:49:06,043 INFO L226 Difference]: Without dead ends: 89 [2024-11-09 17:49:06,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-09 17:49:06,044 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:06,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:06,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-09 17:49:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-09 17:49:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 84 states have internal predecessors, (96), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 17:49:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2024-11-09 17:49:06,053 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 43 [2024-11-09 17:49:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:06,053 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2024-11-09 17:49:06,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 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) [2024-11-09 17:49:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2024-11-09 17:49:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 17:49:06,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:06,055 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:06,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 17:49:06,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:06,255 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:06,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:06,256 INFO L85 PathProgramCache]: Analyzing trace with hash 429156937, now seen corresponding path program 2 times [2024-11-09 17:49:06,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:06,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966716803] [2024-11-09 17:49:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:06,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 17:49:06,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:06,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966716803] [2024-11-09 17:49:06,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966716803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:06,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731620619] [2024-11-09 17:49:06,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:49:06,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:06,515 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:06,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 17:49:06,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:49:06,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:06,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 17:49:06,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 17:49:06,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 17:49:06,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731620619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:06,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:06,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-09 17:49:06,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616462494] [2024-11-09 17:49:06,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:06,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 17:49:06,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:06,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 17:49:06,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-09 17:49:06,923 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 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) [2024-11-09 17:49:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:06,980 INFO L93 Difference]: Finished difference Result 178 states and 217 transitions. [2024-11-09 17:49:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 17:49:06,981 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 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 57 [2024-11-09 17:49:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:06,982 INFO L225 Difference]: With dead ends: 178 [2024-11-09 17:49:06,982 INFO L226 Difference]: Without dead ends: 117 [2024-11-09 17:49:06,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-09 17:49:06,983 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:06,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-09 17:49:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-09 17:49:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 111 states have (on average 1.117117117117117) internal successors, (124), 112 states have internal predecessors, (124), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 17:49:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 130 transitions. [2024-11-09 17:49:06,994 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 130 transitions. Word has length 57 [2024-11-09 17:49:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:06,994 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 130 transitions. [2024-11-09 17:49:06,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 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) [2024-11-09 17:49:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 130 transitions. [2024-11-09 17:49:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 17:49:07,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:07,001 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:07,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 17:49:07,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:07,202 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:07,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1802562775, now seen corresponding path program 3 times [2024-11-09 17:49:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902899908] [2024-11-09 17:49:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 17:49:07,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:07,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902899908] [2024-11-09 17:49:07,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902899908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:07,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711002810] [2024-11-09 17:49:07,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:49:07,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:07,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:07,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:07,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 17:49:07,998 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 17:49:07,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:07,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 17:49:08,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2024-11-09 17:49:08,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2024-11-09 17:49:08,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711002810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:08,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:08,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 7, 7] total 39 [2024-11-09 17:49:08,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783479779] [2024-11-09 17:49:08,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:08,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-09 17:49:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-09 17:49:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=1011, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 17:49:08,305 INFO L87 Difference]: Start difference. First operand 117 states and 130 transitions. Second operand has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 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) [2024-11-09 17:49:08,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:08,721 INFO L93 Difference]: Finished difference Result 228 states and 278 transitions. [2024-11-09 17:49:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 17:49:08,722 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 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 85 [2024-11-09 17:49:08,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:08,723 INFO L225 Difference]: With dead ends: 228 [2024-11-09 17:49:08,723 INFO L226 Difference]: Without dead ends: 167 [2024-11-09 17:49:08,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1524, Invalid=2766, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 17:49:08,725 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:08,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 325 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:49:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-09 17:49:08,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-09 17:49:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 161 states have (on average 1.15527950310559) internal successors, (186), 162 states have internal predecessors, (186), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 17:49:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 192 transitions. [2024-11-09 17:49:08,734 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 192 transitions. Word has length 85 [2024-11-09 17:49:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:08,735 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 192 transitions. [2024-11-09 17:49:08,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 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) [2024-11-09 17:49:08,735 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 192 transitions. [2024-11-09 17:49:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 17:49:08,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:08,736 INFO L215 NwaCegarLoop]: trace histogram [28, 27, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:08,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 17:49:08,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 17:49:08,937 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:08,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:08,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1246693676, now seen corresponding path program 4 times [2024-11-09 17:49:08,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:08,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850535330] [2024-11-09 17:49:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-09 17:49:09,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:09,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850535330] [2024-11-09 17:49:09,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850535330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:09,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234692260] [2024-11-09 17:49:09,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 17:49:09,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:09,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:09,653 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:09,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 17:49:09,816 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 17:49:09,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:09,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 17:49:09,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2024-11-09 17:49:10,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2024-11-09 17:49:10,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234692260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:10,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:10,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 13, 13] total 52 [2024-11-09 17:49:10,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125630252] [2024-11-09 17:49:10,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:10,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-09 17:49:10,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:10,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-09 17:49:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=1942, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 17:49:10,450 INFO L87 Difference]: Start difference. First operand 167 states and 192 transitions. Second operand has 52 states, 52 states have (on average 3.2115384615384617) internal successors, (167), 52 states have internal predecessors, (167), 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) [2024-11-09 17:49:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:10,914 INFO L93 Difference]: Finished difference Result 374 states and 472 transitions. [2024-11-09 17:49:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-09 17:49:10,915 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.2115384615384617) internal successors, (167), 52 states have internal predecessors, (167), 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 111 [2024-11-09 17:49:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:10,916 INFO L225 Difference]: With dead ends: 374 [2024-11-09 17:49:10,916 INFO L226 Difference]: Without dead ends: 265 [2024-11-09 17:49:10,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2166, Invalid=4154, Unknown=0, NotChecked=0, Total=6320 [2024-11-09 17:49:10,920 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 73 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:10,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 244 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:49:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-09 17:49:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-11-09 17:49:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 259 states have (on average 1.1891891891891893) internal successors, (308), 260 states have internal predecessors, (308), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 17:49:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 314 transitions. [2024-11-09 17:49:10,939 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 314 transitions. Word has length 111 [2024-11-09 17:49:10,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:10,940 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 314 transitions. [2024-11-09 17:49:10,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.2115384615384617) internal successors, (167), 52 states have internal predecessors, (167), 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) [2024-11-09 17:49:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 314 transitions. [2024-11-09 17:49:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-09 17:49:10,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:10,941 INFO L215 NwaCegarLoop]: trace histogram [29, 28, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:10,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 17:49:11,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:11,142 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:11,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1857479605, now seen corresponding path program 5 times [2024-11-09 17:49:11,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:11,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963164550] [2024-11-09 17:49:11,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:11,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-09 17:49:11,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:11,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963164550] [2024-11-09 17:49:11,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963164550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:11,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573291814] [2024-11-09 17:49:11,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 17:49:11,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:11,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:11,960 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:11,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process