./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_allDiff2_ground.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/array-examples/standard_allDiff2_ground.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', '45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306'] 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/array-examples/standard_allDiff2_ground.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 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:05:58,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:05:58,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:05:58,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:05:58,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:05:58,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:05:58,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:05:58,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:05:58,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:05:58,665 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:05:58,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:05:58,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:05:58,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:05:58,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:05:58,665 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:05:58,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:05:58,666 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:05:58,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:05:58,667 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:05:58,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:05:58,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:05:58,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:05:58,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:05:58,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:05:58,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:05:58,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:05:58,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:05:58,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:05:58,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:05:58,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:05:58,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:05:58,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:05:58,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:05:58,672 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 -> 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 [2024-11-06 18:05:58,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:05:59,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:05:59,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:05:59,009 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:05:59,009 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:05:59,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-11-06 18:06:00,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:06:00,577 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:06:00,579 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-11-06 18:06:00,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/763829967/4fe3323abe494eb9abcd3352b583dac1/FLAG22cd2e2c0 [2024-11-06 18:06:00,612 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/763829967/4fe3323abe494eb9abcd3352b583dac1 [2024-11-06 18:06:00,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:06:00,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:06:00,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:06:00,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:06:00,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:06:00,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289ef0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00, skipping insertion in model container [2024-11-06 18:06:00,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,645 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:06:00,780 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/array-examples/standard_allDiff2_ground.i[817,830] [2024-11-06 18:06:00,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:06:00,808 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:06:00,819 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/array-examples/standard_allDiff2_ground.i[817,830] [2024-11-06 18:06:00,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:06:00,844 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:06:00,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00 WrapperNode [2024-11-06 18:06:00,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:06:00,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:06:00,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:06:00,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:06:00,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,874 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-11-06 18:06:00,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:06:00,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:06:00,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:06:00,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:06:00,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,885 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,906 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-06 18:06:00,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:06:00,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:06:00,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:06:00,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:06:00,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (1/1) ... [2024-11-06 18:06:00,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:06:00,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:00,964 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) [2024-11-06 18:06:00,968 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 [2024-11-06 18:06:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:06:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:06:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 18:06:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 18:06:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 18:06:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 18:06:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:06:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:06:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 18:06:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 18:06:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 18:06:01,064 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:06:01,065 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:06:01,239 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-06 18:06:01,239 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:06:01,251 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:06:01,252 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-06 18:06:01,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:06:01 BoogieIcfgContainer [2024-11-06 18:06:01,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:06:01,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:06:01,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:06:01,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:06:01,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:06:00" (1/3) ... [2024-11-06 18:06:01,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d9d35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:06:01, skipping insertion in model container [2024-11-06 18:06:01,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:00" (2/3) ... [2024-11-06 18:06:01,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d9d35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:06:01, skipping insertion in model container [2024-11-06 18:06:01,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:06:01" (3/3) ... [2024-11-06 18:06:01,264 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_allDiff2_ground.i [2024-11-06 18:06:01,279 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:06:01,280 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:06:01,338 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:06:01,351 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;@59a38645, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:06:01,352 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:06:01,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-06 18:06:01,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:01,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:01,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:01,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:01,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1934610002, now seen corresponding path program 1 times [2024-11-06 18:06:01,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:01,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096957451] [2024-11-06 18:06:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:01,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:06:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096957451] [2024-11-06 18:06:01,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096957451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:06:01,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:06:01,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:06:01,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409728746] [2024-11-06 18:06:01,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:06:01,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:06:01,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:06:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:06:01,651 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:01,700 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2024-11-06 18:06:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:06:01,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-06 18:06:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:01,710 INFO L225 Difference]: With dead ends: 48 [2024-11-06 18:06:01,710 INFO L226 Difference]: Without dead ends: 22 [2024-11-06 18:06:01,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:06:01,717 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:01,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:06:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-06 18:06:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-06 18:06:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-11-06 18:06:01,755 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 10 [2024-11-06 18:06:01,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:01,756 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-11-06 18:06:01,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-11-06 18:06:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-06 18:06:01,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:01,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:01,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:06:01,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:01,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:01,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1279412436, now seen corresponding path program 1 times [2024-11-06 18:06:01,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:01,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350963914] [2024-11-06 18:06:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:01,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:06:01,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:01,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350963914] [2024-11-06 18:06:01,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350963914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:06:01,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896812052] [2024-11-06 18:06:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:01,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:01,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:01,899 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) [2024-11-06 18:06:01,901 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 [2024-11-06 18:06:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:01,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:06:01,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:06:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 18:06:02,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:06:02,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896812052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:06:02,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:06:02,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-06 18:06:02,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931141737] [2024-11-06 18:06:02,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:06:02,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:06:02,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:02,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:06:02,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:06:02,042 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:02,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:02,094 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2024-11-06 18:06:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:06:02,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-06 18:06:02,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:02,096 INFO L225 Difference]: With dead ends: 37 [2024-11-06 18:06:02,096 INFO L226 Difference]: Without dead ends: 28 [2024-11-06 18:06:02,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:06:02,097 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:02,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:06:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-06 18:06:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-11-06 18:06:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-06 18:06:02,103 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2024-11-06 18:06:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:02,103 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-06 18:06:02,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-06 18:06:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-06 18:06:02,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:02,104 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:02,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 18:06:02,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:02,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:02,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1079055556, now seen corresponding path program 1 times [2024-11-06 18:06:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:02,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145400868] [2024-11-06 18:06:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 18:06:02,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:02,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145400868] [2024-11-06 18:06:02,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145400868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:06:02,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210064424] [2024-11-06 18:06:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:02,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:02,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:02,388 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) [2024-11-06 18:06:02,391 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 [2024-11-06 18:06:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:02,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:06:02,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:06:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 18:06:02,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:06:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 18:06:02,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210064424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:06:02,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:06:02,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-06 18:06:02,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130487537] [2024-11-06 18:06:02,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:06:02,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 18:06:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:02,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 18:06:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:06:02,531 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:02,581 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-11-06 18:06:02,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:06:02,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-06 18:06:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:02,584 INFO L225 Difference]: With dead ends: 57 [2024-11-06 18:06:02,584 INFO L226 Difference]: Without dead ends: 40 [2024-11-06 18:06:02,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:06:02,585 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:02,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 56 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:06:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-06 18:06:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2024-11-06 18:06:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-06 18:06:02,591 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2024-11-06 18:06:02,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:02,592 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-06 18:06:02,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-06 18:06:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-06 18:06:02,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:02,593 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:02,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 18:06:02,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:02,798 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:02,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:02,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1252365506, now seen corresponding path program 2 times [2024-11-06 18:06:02,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:02,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106393729] [2024-11-06 18:06:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:02,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:06:02,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:02,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106393729] [2024-11-06 18:06:02,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106393729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:06:02,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:06:02,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:06:02,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032885053] [2024-11-06 18:06:02,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:06:02,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:06:02,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:02,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:06:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:06:02,985 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:03,062 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2024-11-06 18:06:03,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:06:03,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-06 18:06:03,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:03,065 INFO L225 Difference]: With dead ends: 51 [2024-11-06 18:06:03,065 INFO L226 Difference]: Without dead ends: 36 [2024-11-06 18:06:03,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:06:03,066 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:03,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:06:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-06 18:06:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2024-11-06 18:06:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-06 18:06:03,077 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 22 [2024-11-06 18:06:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:03,078 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-06 18:06:03,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-06 18:06:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-06 18:06:03,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:03,079 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:03,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 18:06:03,079 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:03,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:03,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1710799256, now seen corresponding path program 1 times [2024-11-06 18:06:03,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:03,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949687381] [2024-11-06 18:06:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:03,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 18:06:03,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:03,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949687381] [2024-11-06 18:06:03,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949687381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:06:03,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277182502] [2024-11-06 18:06:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:03,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:03,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:03,263 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) [2024-11-06 18:06:03,265 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 [2024-11-06 18:06:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:03,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:06:03,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:06:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-06 18:06:03,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:06:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-06 18:06:03,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277182502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:06:03,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:06:03,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-06 18:06:03,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405631790] [2024-11-06 18:06:03,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:06:03,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-06 18:06:03,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:03,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-06 18:06:03,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=155, Unknown=0, NotChecked=0, Total=272 [2024-11-06 18:06:03,538 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:03,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:03,877 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2024-11-06 18:06:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-06 18:06:03,879 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-06 18:06:03,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:03,880 INFO L225 Difference]: With dead ends: 107 [2024-11-06 18:06:03,881 INFO L226 Difference]: Without dead ends: 89 [2024-11-06 18:06:03,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=443, Unknown=0, NotChecked=0, Total=702 [2024-11-06 18:06:03,882 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 189 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:03,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 117 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:06:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-06 18:06:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-06 18:06:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.25) internal successors, (110), 88 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2024-11-06 18:06:03,894 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 25 [2024-11-06 18:06:03,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:03,894 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2024-11-06 18:06:03,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:03,895 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2024-11-06 18:06:03,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-06 18:06:03,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:03,896 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:03,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 18:06:04,100 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 [2024-11-06 18:06:04,101 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:04,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash -44265316, now seen corresponding path program 2 times [2024-11-06 18:06:04,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:04,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183687703] [2024-11-06 18:06:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:04,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-06 18:06:04,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:04,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183687703] [2024-11-06 18:06:04,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183687703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:06:04,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246890304] [2024-11-06 18:06:04,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:06:04,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:04,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:04,499 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) [2024-11-06 18:06:04,500 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 [2024-11-06 18:06:04,608 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:06:04,609 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:06:04,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-06 18:06:04,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:06:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-06 18:06:04,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:06:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-06 18:06:04,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246890304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:06:04,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:06:04,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-06 18:06:04,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655729131] [2024-11-06 18:06:04,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:06:04,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-06 18:06:04,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-06 18:06:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-06 18:06:04,961 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:05,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:05,209 INFO L93 Difference]: Finished difference Result 251 states and 340 transitions. [2024-11-06 18:06:05,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-06 18:06:05,210 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-06 18:06:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:05,213 INFO L225 Difference]: With dead ends: 251 [2024-11-06 18:06:05,213 INFO L226 Difference]: Without dead ends: 185 [2024-11-06 18:06:05,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-06 18:06:05,214 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 415 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:05,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:06:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-06 18:06:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 113. [2024-11-06 18:06:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 112 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2024-11-06 18:06:05,240 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 69 [2024-11-06 18:06:05,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:05,240 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2024-11-06 18:06:05,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2024-11-06 18:06:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-06 18:06:05,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:05,245 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:05,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 18:06:05,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-06 18:06:05,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:05,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2113770628, now seen corresponding path program 3 times [2024-11-06 18:06:05,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:05,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315471906] [2024-11-06 18:06:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:05,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-06 18:06:06,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315471906] [2024-11-06 18:06:06,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315471906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:06:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026208328] [2024-11-06 18:06:06,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:06:06,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:06,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:06,232 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:06:06,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 18:06:06,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-06 18:06:06,322 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:06:06,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 18:06:06,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:06:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-06 18:06:06,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 18:06:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026208328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:06:06,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 18:06:06,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 29 [2024-11-06 18:06:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468462087] [2024-11-06 18:06:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:06:06,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 18:06:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 18:06:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2024-11-06 18:06:06,469 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:06,562 INFO L93 Difference]: Finished difference Result 218 states and 280 transitions. [2024-11-06 18:06:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 18:06:06,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-06 18:06:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:06,565 INFO L225 Difference]: With dead ends: 218 [2024-11-06 18:06:06,567 INFO L226 Difference]: Without dead ends: 209 [2024-11-06 18:06:06,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=552, Unknown=0, NotChecked=0, Total=870 [2024-11-06 18:06:06,570 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:06,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 61 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:06:06,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-06 18:06:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 114. [2024-11-06 18:06:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 113 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2024-11-06 18:06:06,595 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 93 [2024-11-06 18:06:06,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:06,596 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2024-11-06 18:06:06,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2024-11-06 18:06:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-06 18:06:06,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:06,599 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:06,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 18:06:06,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:06,803 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:06,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:06,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2020403354, now seen corresponding path program 4 times [2024-11-06 18:06:06,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:06,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644121184] [2024-11-06 18:06:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:06,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-06 18:06:07,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:07,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644121184] [2024-11-06 18:06:07,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644121184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:06:07,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382950729] [2024-11-06 18:06:07,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:06:07,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:07,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:07,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:06:07,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 18:06:07,688 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:06:07,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:06:07,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 18:06:07,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:06:07,791 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-06 18:06:07,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:06:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-06 18:06:08,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382950729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:06:08,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:06:08,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-06 18:06:08,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793241336] [2024-11-06 18:06:08,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:06:08,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-06 18:06:08,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:08,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-06 18:06:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:06:08,622 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:09,294 INFO L93 Difference]: Finished difference Result 592 states and 803 transitions. [2024-11-06 18:06:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-06 18:06:09,295 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-11-06 18:06:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:09,299 INFO L225 Difference]: With dead ends: 592 [2024-11-06 18:06:09,300 INFO L226 Difference]: Without dead ends: 525 [2024-11-06 18:06:09,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:06:09,302 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1129 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:09,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 277 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:06:09,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-06 18:06:09,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 162. [2024-11-06 18:06:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.1428571428571428) internal successors, (184), 161 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 184 transitions. [2024-11-06 18:06:09,348 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 184 transitions. Word has length 96 [2024-11-06 18:06:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:09,348 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 184 transitions. [2024-11-06 18:06:09,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 184 transitions. [2024-11-06 18:06:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-06 18:06:09,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:09,350 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:09,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-06 18:06:09,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-06 18:06:09,553 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:09,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 112256406, now seen corresponding path program 5 times [2024-11-06 18:06:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:09,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050574025] [2024-11-06 18:06:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-06 18:06:11,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:11,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050574025] [2024-11-06 18:06:11,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050574025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:06:11,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595433901] [2024-11-06 18:06:11,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:06:11,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:11,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:11,558 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:06:11,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 18:06:29,930 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-06 18:06:29,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:06:29,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 18:06:29,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:06:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 85 proven. 5 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2024-11-06 18:06:30,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:06:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2024-11-06 18:06:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595433901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:06:30,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:06:30,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 7, 7] total 58 [2024-11-06 18:06:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759524068] [2024-11-06 18:06:30,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:06:30,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-06 18:06:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:30,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-06 18:06:30,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1214, Invalid=2092, Unknown=0, NotChecked=0, Total=3306 [2024-11-06 18:06:30,288 INFO L87 Difference]: Start difference. First operand 162 states and 184 transitions. Second operand has 58 states, 58 states have (on average 2.413793103448276) internal successors, (140), 58 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:37,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:37,781 INFO L93 Difference]: Finished difference Result 639 states and 931 transitions. [2024-11-06 18:06:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2024-11-06 18:06:37,782 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.413793103448276) internal successors, (140), 58 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-11-06 18:06:37,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:37,785 INFO L225 Difference]: With dead ends: 639 [2024-11-06 18:06:37,785 INFO L226 Difference]: Without dead ends: 572 [2024-11-06 18:06:37,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17365 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=17191, Invalid=41615, Unknown=0, NotChecked=0, Total=58806 [2024-11-06 18:06:37,804 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3189 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3189 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:37,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3189 Valid, 274 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:06:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-06 18:06:37,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 192. [2024-11-06 18:06:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.1518324607329844) internal successors, (220), 191 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 220 transitions. [2024-11-06 18:06:37,838 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 220 transitions. Word has length 144 [2024-11-06 18:06:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:37,838 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 220 transitions. [2024-11-06 18:06:37,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.413793103448276) internal successors, (140), 58 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 220 transitions. [2024-11-06 18:06:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-06 18:06:37,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:37,841 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 16, 16, 16, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:37,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 18:06:38,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:38,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:38,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2068525704, now seen corresponding path program 6 times [2024-11-06 18:06:38,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:38,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510542000] [2024-11-06 18:06:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2866 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-11-06 18:06:39,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:39,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510542000] [2024-11-06 18:06:39,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510542000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:06:39,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595396391] [2024-11-06 18:06:39,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-06 18:06:39,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:39,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:39,959 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:06:39,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 18:06:40,167 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-06 18:06:40,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:06:40,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 18:06:40,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:06:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2866 backedges. 147 proven. 5 refuted. 0 times theorem prover too weak. 2714 trivial. 0 not checked. [2024-11-06 18:06:40,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:06:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2866 backedges. 147 proven. 5 refuted. 0 times theorem prover too weak. 2714 trivial. 0 not checked. [2024-11-06 18:06:40,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595396391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:06:40,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:06:40,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 8, 8] total 61 [2024-11-06 18:06:40,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026588293] [2024-11-06 18:06:40,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:06:40,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-06 18:06:40,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:40,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-06 18:06:40,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1519, Invalid=2141, Unknown=0, NotChecked=0, Total=3660 [2024-11-06 18:06:40,580 INFO L87 Difference]: Start difference. First operand 192 states and 220 transitions. Second operand has 61 states, 61 states have (on average 2.3934426229508197) internal successors, (146), 61 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:06:49,716 INFO L93 Difference]: Finished difference Result 1464 states and 2012 transitions. [2024-11-06 18:06:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2024-11-06 18:06:49,717 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.3934426229508197) internal successors, (146), 61 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2024-11-06 18:06:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:06:49,723 INFO L225 Difference]: With dead ends: 1464 [2024-11-06 18:06:49,723 INFO L226 Difference]: Without dead ends: 1365 [2024-11-06 18:06:49,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32272 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=21703, Invalid=70409, Unknown=0, NotChecked=0, Total=92112 [2024-11-06 18:06:49,737 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 3405 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3405 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 18:06:49,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3405 Valid, 214 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 18:06:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2024-11-06 18:06:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 749. [2024-11-06 18:06:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.3342245989304813) internal successors, (998), 748 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 998 transitions. [2024-11-06 18:06:50,011 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 998 transitions. Word has length 188 [2024-11-06 18:06:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:06:50,011 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 998 transitions. [2024-11-06 18:06:50,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.3934426229508197) internal successors, (146), 61 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:06:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 998 transitions. [2024-11-06 18:06:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2024-11-06 18:06:50,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:06:50,025 INFO L215 NwaCegarLoop]: trace histogram [143, 143, 143, 50, 50, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:06:50,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 18:06:50,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:50,226 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:06:50,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:06:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1540598092, now seen corresponding path program 7 times [2024-11-06 18:06:50,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:06:50,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079686182] [2024-11-06 18:06:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:06:50,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:06:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 44383 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 41883 trivial. 0 not checked. [2024-11-06 18:06:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:06:54,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079686182] [2024-11-06 18:06:54,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079686182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:06:54,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108184830] [2024-11-06 18:06:54,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-06 18:06:54,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:06:54,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:06:54,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:06:54,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:06:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:06:54,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-06 18:06:54,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:06:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 44383 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 41883 trivial. 0 not checked. [2024-11-06 18:06:54,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:06:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 44383 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 41883 trivial. 0 not checked. [2024-11-06 18:06:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108184830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:06:57,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:06:57,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 105 [2024-11-06 18:06:57,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703703406] [2024-11-06 18:06:57,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:06:57,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-06 18:06:57,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:06:57,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-06 18:06:57,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2024-11-06 18:06:57,360 INFO L87 Difference]: Start difference. First operand 749 states and 998 transitions. Second operand has 105 states, 105 states have (on average 2.1142857142857143) internal successors, (222), 105 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:07:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:07:14,654 INFO L93 Difference]: Finished difference Result 48162 states and 66764 transitions. [2024-11-06 18:07:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-06 18:07:14,655 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.1142857142857143) internal successors, (222), 105 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 731 [2024-11-06 18:07:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:07:14,823 INFO L225 Difference]: With dead ends: 48162 [2024-11-06 18:07:14,824 INFO L226 Difference]: Without dead ends: 47516 [2024-11-06 18:07:14,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1513 GetRequests, 1410 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2024-11-06 18:07:14,850 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3334 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:07:14,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3334 Valid, 584 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:07:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47516 states. [2024-11-06 18:07:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47516 to 853. [2024-11-06 18:07:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 1.2934272300469483) internal successors, (1102), 852 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:07:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1102 transitions. [2024-11-06 18:07:15,617 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1102 transitions. Word has length 731 [2024-11-06 18:07:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:07:15,618 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1102 transitions. [2024-11-06 18:07:15,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.1142857142857143) internal successors, (222), 105 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:07:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1102 transitions. [2024-11-06 18:07:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2024-11-06 18:07:15,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:07:15,637 INFO L215 NwaCegarLoop]: trace histogram [143, 143, 143, 102, 102, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:07:15,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 18:07:15,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:07:15,838 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:07:15,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:07:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash 69195852, now seen corresponding path program 8 times [2024-11-06 18:07:15,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:07:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977240925] [2024-11-06 18:07:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:07:15,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:07:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:07:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 52287 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 41883 trivial. 0 not checked. [2024-11-06 18:07:24,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:07:24,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977240925] [2024-11-06 18:07:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977240925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:07:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936633690] [2024-11-06 18:07:24,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:07:24,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:07:24,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:07:24,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:07:24,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 18:07:25,313 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:07:25,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:07:25,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-06 18:07:25,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:07:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 52287 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 41883 trivial. 0 not checked. [2024-11-06 18:07:25,608 INFO L311 TraceCheckSpWp]: Computing backward predicates...