./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.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_50-while_file-10.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', 'dffb49b583bf1b2953c0c17a06d6fc63bf48c484ad06befbc2660a12f206f89f'] 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_50-while_file-10.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 dffb49b583bf1b2953c0c17a06d6fc63bf48c484ad06befbc2660a12f206f89f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 08:49:45,532 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 08:49:45,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 08:49:45,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 08:49:45,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 08:49:45,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 08:49:45,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 08:49:45,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 08:49:45,652 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 08:49:45,652 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 08:49:45,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 08:49:45,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 08:49:45,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 08:49:45,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 08:49:45,653 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 08:49:45,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 08:49:45,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 08:49:45,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 08:49:45,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 08:49:45,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 08:49:45,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 08:49:45,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 08:49:45,655 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 08:49:45,655 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 08:49:45,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 08:49:45,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 08:49:45,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 08:49:45,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 08:49:45,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 08:49:45,656 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 -> dffb49b583bf1b2953c0c17a06d6fc63bf48c484ad06befbc2660a12f206f89f [2024-11-07 08:49:45,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 08:49:45,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 08:49:45,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 08:49:45,945 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 08:49:45,945 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 08:49:45,947 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.i [2024-11-07 08:49:47,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 08:49:47,521 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 08:49:47,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-10.i [2024-11-07 08:49:47,531 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17863b21a/d42391fae1f54612aaa1ad9bfadc40a5/FLAG06e2adea3 [2024-11-07 08:49:47,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/17863b21a/d42391fae1f54612aaa1ad9bfadc40a5 [2024-11-07 08:49:47,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 08:49:47,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 08:49:47,556 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 08:49:47,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 08:49:47,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 08:49:47,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:47,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1103e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47, skipping insertion in model container [2024-11-07 08:49:47,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:47,586 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 08:49:47,723 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_50-while_file-10.i[915,928] [2024-11-07 08:49:47,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 08:49:47,811 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 08:49:47,823 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_50-while_file-10.i[915,928] [2024-11-07 08:49:47,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 08:49:47,869 INFO L204 MainTranslator]: Completed translation [2024-11-07 08:49:47,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47 WrapperNode [2024-11-07 08:49:47,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 08:49:47,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 08:49:47,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 08:49:47,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 08:49:47,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:47,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:47,948 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 166 [2024-11-07 08:49:47,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 08:49:47,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 08:49:47,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 08:49:47,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 08:49:47,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:47,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:47,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:47,991 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 08:49:47,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:47,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:48,001 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:48,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:48,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:48,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:48,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 08:49:48,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 08:49:48,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 08:49:48,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 08:49:48,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (1/1) ... [2024-11-07 08:49:48,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 08:49:48,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 08:49:48,049 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 08:49:48,053 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 08:49:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 08:49:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-07 08:49:48,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-07 08:49:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 08:49:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 08:49:48,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 08:49:48,156 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 08:49:48,158 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 08:49:48,537 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-07 08:49:48,537 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 08:49:48,547 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 08:49:48,547 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 08:49:48,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:49:48 BoogieIcfgContainer [2024-11-07 08:49:48,548 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 08:49:48,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 08:49:48,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 08:49:48,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 08:49:48,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:49:47" (1/3) ... [2024-11-07 08:49:48,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a3a459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:49:48, skipping insertion in model container [2024-11-07 08:49:48,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:49:47" (2/3) ... [2024-11-07 08:49:48,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a3a459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:49:48, skipping insertion in model container [2024-11-07 08:49:48,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:49:48" (3/3) ... [2024-11-07 08:49:48,556 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-10.i [2024-11-07 08:49:48,567 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 08:49:48,567 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 08:49:48,614 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 08:49:48,625 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;@327fcf27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 08:49:48,625 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 08:49:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 54 states have internal predecessors, (74), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-07 08:49:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-07 08:49:48,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:49:48,640 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:49:48,641 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:49:48,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:49:48,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1915142532, now seen corresponding path program 1 times [2024-11-07 08:49:48,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:49:48,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121838278] [2024-11-07 08:49:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:49:48,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:49:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:49:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 08:49:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:49:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 08:49:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:49:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-07 08:49:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:49:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 08:49:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:49:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-07 08:49:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:49:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-07 08:49:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:49:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 08:49:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:49:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 08:49:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-07 08:49:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-07 08:49:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:49:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-07 08:49:49,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:49:49,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121838278] [2024-11-07 08:49:49,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121838278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:49:49,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:49:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 08:49:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998864588] [2024-11-07 08:49:49,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:49:49,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 08:49:49,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:49:49,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 08:49:49,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 08:49:49,556 INFO L87 Difference]: Start difference. First operand has 74 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 54 states have internal predecessors, (74), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-07 08:49:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:49:49,814 INFO L93 Difference]: Finished difference Result 209 states and 357 transitions. [2024-11-07 08:49:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 08:49:49,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 122 [2024-11-07 08:49:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:49:49,827 INFO L225 Difference]: With dead ends: 209 [2024-11-07 08:49:49,828 INFO L226 Difference]: Without dead ends: 138 [2024-11-07 08:49:49,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 08:49:49,835 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 72 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 08:49:49,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 384 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 08:49:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-07 08:49:49,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 104. [2024-11-07 08:49:49,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 65 states have internal predecessors, (82), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-07 08:49:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2024-11-07 08:49:49,903 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 122 [2024-11-07 08:49:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:49:49,905 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2024-11-07 08:49:49,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-07 08:49:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2024-11-07 08:49:49,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-07 08:49:49,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:49:49,909 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:49:49,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 08:49:49,909 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:49:49,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:49:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2009744545, now seen corresponding path program 1 times [2024-11-07 08:49:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:49:49,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537324593] [2024-11-07 08:49:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:49:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:49:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:50:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 08:50:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:50:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 08:50:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:50:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-07 08:50:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:50:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 08:50:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:50:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-07 08:50:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:50:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-07 08:50:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:50:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 08:50:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:50:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 08:50:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-07 08:50:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-07 08:50:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-07 08:50:06,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:50:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537324593] [2024-11-07 08:50:06,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537324593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:50:06,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:50:06,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-07 08:50:06,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107754055] [2024-11-07 08:50:06,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:50:06,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 08:50:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:50:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 08:50:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-07 08:50:06,961 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-07 08:50:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:50:08,738 INFO L93 Difference]: Finished difference Result 341 states and 493 transitions. [2024-11-07 08:50:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 08:50:08,739 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-07 08:50:08,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:50:08,743 INFO L225 Difference]: With dead ends: 341 [2024-11-07 08:50:08,746 INFO L226 Difference]: Without dead ends: 274 [2024-11-07 08:50:08,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2024-11-07 08:50:08,748 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 666 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 08:50:08,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 562 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 08:50:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-07 08:50:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 187. [2024-11-07 08:50:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 128 states have (on average 1.296875) internal successors, (166), 129 states have internal predecessors, (166), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-07 08:50:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 274 transitions. [2024-11-07 08:50:08,784 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 274 transitions. Word has length 123 [2024-11-07 08:50:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:50:08,785 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 274 transitions. [2024-11-07 08:50:08,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-07 08:50:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 274 transitions. [2024-11-07 08:50:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-07 08:50:08,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:50:08,787 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:50:08,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 08:50:08,791 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:50:08,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:50:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1329686175, now seen corresponding path program 1 times [2024-11-07 08:50:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:50:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520225023] [2024-11-07 08:50:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:50:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:50:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:50:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 08:50:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:50:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 08:50:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:50:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-07 08:50:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:50:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 08:50:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:50:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-07 08:50:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:50:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-07 08:50:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:50:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 08:50:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:50:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 08:50:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-07 08:50:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-07 08:50:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:50:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-07 08:50:58,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:50:58,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520225023] [2024-11-07 08:50:58,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520225023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:50:58,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:50:58,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-07 08:50:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587358935] [2024-11-07 08:50:58,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:50:58,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 08:50:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:50:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 08:50:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-07 08:50:58,195 INFO L87 Difference]: Start difference. First operand 187 states and 274 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-07 08:50:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:50:59,893 INFO L93 Difference]: Finished difference Result 343 states and 492 transitions. [2024-11-07 08:50:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 08:50:59,894 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-07 08:50:59,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:50:59,899 INFO L225 Difference]: With dead ends: 343 [2024-11-07 08:50:59,900 INFO L226 Difference]: Without dead ends: 276 [2024-11-07 08:50:59,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2024-11-07 08:50:59,901 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 499 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 08:50:59,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 528 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 08:50:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-07 08:50:59,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 187. [2024-11-07 08:50:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 128 states have (on average 1.296875) internal successors, (166), 129 states have internal predecessors, (166), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-07 08:50:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 274 transitions. [2024-11-07 08:50:59,939 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 274 transitions. Word has length 123 [2024-11-07 08:50:59,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:50:59,939 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 274 transitions. [2024-11-07 08:50:59,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-07 08:50:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 274 transitions. [2024-11-07 08:50:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-07 08:50:59,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:50:59,943 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:50:59,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 08:50:59,947 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:50:59,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:50:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1137097311, now seen corresponding path program 1 times [2024-11-07 08:50:59,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:50:59,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21509792] [2024-11-07 08:50:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:50:59,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:51:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-07 08:51:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 08:51:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-07 08:51:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 08:51:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 08:51:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-07 08:51:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-07 08:51:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 08:51:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 08:51:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-07 08:51:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-07 08:51:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-07 08:51:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-07 08:51:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-07 08:51:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-07 08:51:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 08:51:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-07 08:51:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-07 08:51:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 08:51:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-07 08:51:13,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 08:51:13,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21509792] [2024-11-07 08:51:13,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21509792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 08:51:13,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 08:51:13,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-07 08:51:13,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459983477] [2024-11-07 08:51:13,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 08:51:13,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 08:51:13,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 08:51:13,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 08:51:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-07 08:51:13,443 INFO L87 Difference]: Start difference. First operand 187 states and 274 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-07 08:51:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 08:51:15,330 INFO L93 Difference]: Finished difference Result 385 states and 538 transitions. [2024-11-07 08:51:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 08:51:15,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 123 [2024-11-07 08:51:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 08:51:15,334 INFO L225 Difference]: With dead ends: 385 [2024-11-07 08:51:15,334 INFO L226 Difference]: Without dead ends: 318 [2024-11-07 08:51:15,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2024-11-07 08:51:15,335 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 922 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-07 08:51:15,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 636 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-07 08:51:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-07 08:51:15,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 208. [2024-11-07 08:51:15,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 145 states have (on average 1.2758620689655173) internal successors, (185), 146 states have internal predecessors, (185), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-07 08:51:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 293 transitions. [2024-11-07 08:51:15,368 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 293 transitions. Word has length 123 [2024-11-07 08:51:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 08:51:15,369 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 293 transitions. [2024-11-07 08:51:15,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-07 08:51:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 293 transitions. [2024-11-07 08:51:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-07 08:51:15,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 08:51:15,371 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:51:15,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 08:51:15,371 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 08:51:15,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 08:51:15,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1395262749, now seen corresponding path program 1 times [2024-11-07 08:51:15,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 08:51:15,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837741683] [2024-11-07 08:51:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 08:51:15,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 08:51:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat