./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-50.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '519864e53b03022f19665d838cae53af0d2c6f0a1e59ab679c7909b75395a350'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-50.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 519864e53b03022f19665d838cae53af0d2c6f0a1e59ab679c7909b75395a350 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 08:10:52,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 08:10:52,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 08:10:52,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 08:10:52,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 08:10:52,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 08:10:52,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 08:10:52,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 08:10:52,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 08:10:52,215 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 08:10:52,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 08:10:52,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 08:10:52,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 08:10:52,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 08:10:52,217 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 08:10:52,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 08:10:52,217 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 08:10:52,218 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 08:10:52,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 08:10:52,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 08:10:52,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 08:10:52,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 08:10:52,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 08:10:52,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 08:10:52,219 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 08:10:52,219 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 08:10:52,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 08:10:52,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 08:10:52,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 08:10:52,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 08:10:52,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 08:10:52,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 08:10:52,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 08:10:52,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 08:10:52,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 08:10:52,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 08:10:52,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 08:10:52,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 08:10:52,221 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 08:10:52,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 08:10:52,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 08:10:52,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 08:10:52,222 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 -> 519864e53b03022f19665d838cae53af0d2c6f0a1e59ab679c7909b75395a350 [2024-11-07 08:10:52,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 08:10:52,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 08:10:52,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 08:10:52,530 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 08:10:52,531 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 08:10:52,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-50.i [2024-11-07 08:10:53,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 08:10:54,063 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 08:10:54,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-50.i [2024-11-07 08:10:54,073 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cceecf571/bcd36c8e079940a1a50c712c527797a7/FLAG336bbcf19 [2024-11-07 08:10:54,088 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cceecf571/bcd36c8e079940a1a50c712c527797a7 [2024-11-07 08:10:54,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 08:10:54,096 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 08:10:54,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 08:10:54,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 08:10:54,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 08:10:54,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f63181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54, skipping insertion in model container [2024-11-07 08:10:54,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,129 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 08:10:54,256 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-50.i[916,929] [2024-11-07 08:10:54,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 08:10:54,365 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 08:10:54,377 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-50.i[916,929] [2024-11-07 08:10:54,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 08:10:54,439 INFO L204 MainTranslator]: Completed translation [2024-11-07 08:10:54,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54 WrapperNode [2024-11-07 08:10:54,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 08:10:54,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 08:10:54,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 08:10:54,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 08:10:54,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,512 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 280 [2024-11-07 08:10:54,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 08:10:54,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 08:10:54,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 08:10:54,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 08:10:54,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,527 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,557 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 08:10:54,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 08:10:54,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 08:10:54,614 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 08:10:54,614 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 08:10:54,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (1/1) ... [2024-11-07 08:10:54,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 08:10:54,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 08:10:54,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 08:10:54,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 08:10:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 08:10:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-07 08:10:54,681 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-07 08:10:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 08:10:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 08:10:54,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 08:10:54,758 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 08:10:54,759 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 08:10:55,370 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-07 08:10:55,370 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 08:10:55,387 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 08:10:55,388 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 08:10:55,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:10:55 BoogieIcfgContainer [2024-11-07 08:10:55,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 08:10:55,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 08:10:55,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 08:10:55,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 08:10:55,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:10:54" (1/3) ... [2024-11-07 08:10:55,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1706bcd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:10:55, skipping insertion in model container [2024-11-07 08:10:55,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:54" (2/3) ... [2024-11-07 08:10:55,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1706bcd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:10:55, skipping insertion in model container [2024-11-07 08:10:55,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:10:55" (3/3) ... [2024-11-07 08:10:55,398 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-50.i [2024-11-07 08:10:55,411 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 08:10:55,411 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 08:10:55,458 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 08:10:55,468 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;@767d7fbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 08:10:55,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 08:10:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 85 states have (on average 1.388235294117647) internal successors, (118), 86 states have internal predecessors, (118), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-07 08:10:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-07 08:10:55,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:10:55,487 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 08:10:55,487 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:10:55,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:10:55,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1785504457, now seen corresponding path program 1 times [2024-11-07 08:10:55,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:10:55,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239447686] [2024-11-07 08:10:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:10:55,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:10:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:10:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 08:10:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:10:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 08:10:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:10:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 08:10:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:10:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 08:10:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:10:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 08:10:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:10:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 08:10:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:10:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 08:10:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:10:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-07 08:10:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:55,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-07 08:10:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-07 08:10:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-07 08:10:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-07 08:10:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-07 08:10:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-07 08:10:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-07 08:10:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-07 08:10:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-07 08:10:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-07 08:10:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-07 08:10:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-07 08:10:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-07 08:10:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-07 08:10:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-11-07 08:10:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-11-07 08:10:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-07 08:10:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-11-07 08:10:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-11-07 08:10:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-11-07 08:10:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-11-07 08:10:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-07 08:10:56,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:10:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239447686] [2024-11-07 08:10:56,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239447686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:10:56,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:10:56,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 08:10:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55155845] [2024-11-07 08:10:56,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:10:56,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 08:10:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:10:56,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 08:10:56,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 08:10:56,222 INFO L87 Difference]: Start difference. First operand has 125 states, 85 states have (on average 1.388235294117647) internal successors, (118), 86 states have internal predecessors, (118), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2024-11-07 08:10:56,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:10:56,267 INFO L93 Difference]: Finished difference Result 243 states and 415 transitions. [2024-11-07 08:10:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 08:10:56,269 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) Word has length 243 [2024-11-07 08:10:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:10:56,276 INFO L225 Difference]: With dead ends: 243 [2024-11-07 08:10:56,276 INFO L226 Difference]: Without dead ends: 121 [2024-11-07 08:10:56,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 08:10:56,284 INFO L432 NwaCegarLoop]: 185 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, 185 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 [2024-11-07 08:10:56,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 08:10:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-07 08:10:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-07 08:10:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.353658536585366) internal successors, (111), 82 states have internal predecessors, (111), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-07 08:10:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 185 transitions. [2024-11-07 08:10:56,328 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 185 transitions. Word has length 243 [2024-11-07 08:10:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:10:56,329 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 185 transitions. [2024-11-07 08:10:56,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2024-11-07 08:10:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 185 transitions. [2024-11-07 08:10:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-07 08:10:56,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:10:56,335 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 08:10:56,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 08:10:56,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:10:56,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:10:56,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1599546669, now seen corresponding path program 1 times [2024-11-07 08:10:56,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:10:56,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098158558] [2024-11-07 08:10:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:10:56,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:10:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:10:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 08:10:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:10:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 08:10:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:10:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 08:10:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:10:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 08:10:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:10:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 08:10:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:10:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 08:10:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:10:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 08:10:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:10:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-07 08:10:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-07 08:10:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-07 08:10:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-07 08:10:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-07 08:10:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-07 08:10:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-07 08:10:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-07 08:10:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-07 08:10:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-07 08:10:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-07 08:10:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-07 08:10:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-07 08:10:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-07 08:10:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-07 08:10:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-11-07 08:10:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-11-07 08:10:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-07 08:10:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-11-07 08:10:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-11-07 08:10:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-11-07 08:10:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-11-07 08:10:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-07 08:10:57,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:10:57,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098158558] [2024-11-07 08:10:57,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098158558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:10:57,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:10:57,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 08:10:57,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174085900] [2024-11-07 08:10:57,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:10:57,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 08:10:57,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:10:57,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 08:10:57,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 08:10:57,289 INFO L87 Difference]: Start difference. First operand 121 states and 185 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-07 08:10:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:10:57,559 INFO L93 Difference]: Finished difference Result 239 states and 367 transitions. [2024-11-07 08:10:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 08:10:57,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 243 [2024-11-07 08:10:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:10:57,565 INFO L225 Difference]: With dead ends: 239 [2024-11-07 08:10:57,566 INFO L226 Difference]: Without dead ends: 121 [2024-11-07 08:10:57,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 08:10:57,568 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 08:10:57,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 172 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 08:10:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-07 08:10:57,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-07 08:10:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 82 states have internal predecessors, (107), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-07 08:10:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 181 transitions. [2024-11-07 08:10:57,594 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 181 transitions. Word has length 243 [2024-11-07 08:10:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:10:57,597 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 181 transitions. [2024-11-07 08:10:57,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-07 08:10:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 181 transitions. [2024-11-07 08:10:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-07 08:10:57,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:10:57,603 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 08:10:57,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 08:10:57,603 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:10:57,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:10:57,604 INFO L85 PathProgramCache]: Analyzing trace with hash -896856045, now seen corresponding path program 1 times [2024-11-07 08:10:57,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:10:57,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291897918] [2024-11-07 08:10:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:10:57,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:10:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:10:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 08:10:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:10:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 08:10:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:10:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 08:10:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:10:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 08:10:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:10:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 08:10:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:10:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 08:10:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:10:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 08:10:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:10:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-07 08:10:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-07 08:10:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-07 08:10:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-07 08:10:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-07 08:10:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-07 08:10:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-07 08:10:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-07 08:10:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-07 08:10:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-07 08:10:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-07 08:10:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-07 08:10:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-07 08:10:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-07 08:10:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-07 08:10:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-11-07 08:10:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-11-07 08:10:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-07 08:10:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-11-07 08:10:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-11-07 08:10:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-11-07 08:10:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-11-07 08:10:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 9 proven. 99 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2024-11-07 08:10:58,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:10:58,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291897918] [2024-11-07 08:10:58,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291897918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 08:10:58,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696803756] [2024-11-07 08:10:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:10:58,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 08:10:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 08:10:58,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 08:10:58,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 08:10:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:10:58,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 08:10:58,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 08:10:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 438 proven. 99 refuted. 0 times theorem prover too weak. 2127 trivial. 0 not checked. [2024-11-07 08:10:59,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 08:10:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 9 proven. 99 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2024-11-07 08:10:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696803756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 08:10:59,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 08:10:59,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-07 08:10:59,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856076199] [2024-11-07 08:10:59,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 08:10:59,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 08:10:59,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:10:59,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 08:10:59,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-07 08:10:59,928 INFO L87 Difference]: Start difference. First operand 121 states and 181 transitions. Second operand has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2024-11-07 08:11:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:11:00,602 INFO L93 Difference]: Finished difference Result 247 states and 367 transitions. [2024-11-07 08:11:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 08:11:00,604 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) Word has length 243 [2024-11-07 08:11:00,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:11:00,608 INFO L225 Difference]: With dead ends: 247 [2024-11-07 08:11:00,609 INFO L226 Difference]: Without dead ends: 129 [2024-11-07 08:11:00,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2024-11-07 08:11:00,611 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 220 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 08:11:00,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 669 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 08:11:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-07 08:11:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2024-11-07 08:11:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.2823529411764707) internal successors, (109), 85 states have internal predecessors, (109), 37 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-07 08:11:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2024-11-07 08:11:00,642 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 183 transitions. Word has length 243 [2024-11-07 08:11:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:11:00,642 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 183 transitions. [2024-11-07 08:11:00,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 3 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2024-11-07 08:11:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 183 transitions. [2024-11-07 08:11:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-07 08:11:00,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:11:00,646 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 08:11:00,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 08:11:00,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 08:11:00,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:11:00,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:11:00,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2121699089, now seen corresponding path program 1 times [2024-11-07 08:11:00,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:11:00,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380746816] [2024-11-07 08:11:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:11:00,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:11:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 08:11:01,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088457960] [2024-11-07 08:11:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:11:01,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 08:11:01,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 08:11:01,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 08:11:01,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 08:11:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:01,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-07 08:11:01,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 08:11:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-07 08:11:01,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 08:11:01,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:11:01,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380746816] [2024-11-07 08:11:01,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 08:11:01,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088457960] [2024-11-07 08:11:01,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088457960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:11:01,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:11:01,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 08:11:01,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602797217] [2024-11-07 08:11:01,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:11:01,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 08:11:01,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:11:01,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 08:11:01,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 08:11:01,392 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-07 08:11:01,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:11:01,489 INFO L93 Difference]: Finished difference Result 295 states and 429 transitions. [2024-11-07 08:11:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 08:11:01,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 244 [2024-11-07 08:11:01,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:11:01,493 INFO L225 Difference]: With dead ends: 295 [2024-11-07 08:11:01,493 INFO L226 Difference]: Without dead ends: 173 [2024-11-07 08:11:01,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 08:11:01,494 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 61 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 08:11:01,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 334 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 08:11:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-07 08:11:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2024-11-07 08:11:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 126 states have (on average 1.3095238095238095) internal successors, (165), 127 states have internal predecessors, (165), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-07 08:11:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 245 transitions. [2024-11-07 08:11:01,518 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 245 transitions. Word has length 244 [2024-11-07 08:11:01,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:11:01,519 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 245 transitions. [2024-11-07 08:11:01,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-07 08:11:01,519 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 245 transitions. [2024-11-07 08:11:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-07 08:11:01,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:11:01,522 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 08:11:01,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 08:11:01,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 08:11:01,723 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:11:01,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:11:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash -127554383, now seen corresponding path program 1 times [2024-11-07 08:11:01,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:11:01,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193022808] [2024-11-07 08:11:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:11:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:11:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 08:11:02,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215605706] [2024-11-07 08:11:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:11:02,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 08:11:02,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 08:11:02,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 08:11:02,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 08:11:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:02,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 08:11:02,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 08:11:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 660 proven. 372 refuted. 0 times theorem prover too weak. 1632 trivial. 0 not checked. [2024-11-07 08:11:05,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 08:11:31,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:11:31,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193022808] [2024-11-07 08:11:31,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 08:11:31,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215605706] [2024-11-07 08:11:31,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215605706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 08:11:31,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-07 08:11:31,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-11-07 08:11:31,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799246959] [2024-11-07 08:11:31,132 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-07 08:11:31,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 08:11:31,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:11:31,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 08:11:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=463, Unknown=5, NotChecked=0, Total=600 [2024-11-07 08:11:31,134 INFO L87 Difference]: Start difference. First operand 170 states and 245 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 16 states have internal predecessors, (83), 5 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2024-11-07 08:11:42,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:11:42,623 INFO L93 Difference]: Finished difference Result 634 states and 889 transitions. [2024-11-07 08:11:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 08:11:42,625 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 16 states have internal predecessors, (83), 5 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) Word has length 244 [2024-11-07 08:11:42,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:11:42,632 INFO L225 Difference]: With dead ends: 634 [2024-11-07 08:11:42,633 INFO L226 Difference]: Without dead ends: 467 [2024-11-07 08:11:42,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=227, Invalid=698, Unknown=5, NotChecked=0, Total=930 [2024-11-07 08:11:42,635 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 293 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-07 08:11:42,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1114 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-07 08:11:42,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-07 08:11:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 384. [2024-11-07 08:11:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 295 states have (on average 1.3186440677966103) internal successors, (389), 297 states have internal predecessors, (389), 78 states have call successors, (78), 10 states have call predecessors, (78), 10 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-07 08:11:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 545 transitions. [2024-11-07 08:11:42,683 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 545 transitions. Word has length 244 [2024-11-07 08:11:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:11:42,684 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 545 transitions. [2024-11-07 08:11:42,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 16 states have internal predecessors, (83), 5 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2024-11-07 08:11:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 545 transitions. [2024-11-07 08:11:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-07 08:11:42,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:11:42,691 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 08:11:42,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 08:11:42,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 08:11:42,896 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:11:42,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:11:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash 12994227, now seen corresponding path program 1 times [2024-11-07 08:11:42,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:11:42,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933573967] [2024-11-07 08:11:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:11:42,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:11:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:11:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 08:11:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:11:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 08:11:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:11:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 08:11:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:11:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-07 08:11:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:11:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 08:11:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:11:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-07 08:11:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:11:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-07 08:11:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:11:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-07 08:11:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-07 08:11:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-07 08:11:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-07 08:11:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-07 08:11:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-07 08:11:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-07 08:11:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-11-07 08:11:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-07 08:11:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-07 08:11:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-07 08:11:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-07 08:11:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-11-07 08:11:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-07 08:11:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-07 08:11:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-11-07 08:11:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-11-07 08:11:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-11-07 08:11:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-11-07 08:11:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-11-07 08:11:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-11-07 08:11:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-11-07 08:11:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 3 proven. 105 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2024-11-07 08:11:44,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:11:44,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933573967] [2024-11-07 08:11:44,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933573967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 08:11:44,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021239325] [2024-11-07 08:11:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:11:44,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 08:11:44,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 08:11:44,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 08:11:44,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 08:11:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:11:45,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 08:11:45,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 08:12:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 215 proven. 204 refuted. 0 times theorem prover too weak. 2245 trivial. 0 not checked. [2024-11-07 08:12:01,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 08:12:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 6 proven. 207 refuted. 0 times theorem prover too weak. 2451 trivial. 0 not checked. [2024-11-07 08:12:08,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021239325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 08:12:08,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 08:12:08,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 25 [2024-11-07 08:12:08,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8325586] [2024-11-07 08:12:08,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 08:12:08,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 08:12:08,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:12:08,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 08:12:08,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2024-11-07 08:12:08,517 INFO L87 Difference]: Start difference. First operand 384 states and 545 transitions. Second operand has 25 states, 24 states have (on average 6.291666666666667) internal successors, (151), 23 states have internal predecessors, (151), 7 states have call successors, (111), 4 states have call predecessors, (111), 8 states have return successors, (111), 7 states have call predecessors, (111), 7 states have call successors, (111)