./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrcspn-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/array-memsafety/cstrcspn-alloca-1.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '15fe42cb945ebd9019cc38134c29264613097f232589ff55d01d33d66b19d85f'] 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/cstrcspn-alloca-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15fe42cb945ebd9019cc38134c29264613097f232589ff55d01d33d66b19d85f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 16:15:35,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 16:15:35,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 16:15:35,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 16:15:35,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 16:15:35,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 16:15:35,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 16:15:35,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 16:15:35,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 16:15:35,202 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 16:15:35,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 16:15:35,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 16:15:35,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 16:15:35,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 16:15:35,203 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 16:15:35,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 16:15:35,204 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 16:15:35,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 16:15:35,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 16:15:35,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 16:15:35,204 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 16:15:35,204 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 16:15:35,204 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 16:15:35,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 16:15:35,205 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 16:15:35,205 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 16:15:35,205 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 16:15:35,205 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 16:15:35,205 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 16:15:35,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 16:15:35,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 16:15:35,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 16:15:35,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 16:15:35,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:15:35,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 16:15:35,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 16:15:35,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 16:15:35,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 16:15:35,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 16:15:35,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 16:15:35,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 16:15:35,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 16:15:35,208 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 15fe42cb945ebd9019cc38134c29264613097f232589ff55d01d33d66b19d85f [2024-11-07 16:15:35,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 16:15:35,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 16:15:35,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 16:15:35,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 16:15:35,505 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 16:15:35,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrcspn-alloca-1.i [2024-11-07 16:15:36,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 16:15:37,017 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 16:15:37,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrcspn-alloca-1.i [2024-11-07 16:15:37,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b739ebf7f/d67bb134b2de4fdea5ff91339451e8b3/FLAG1fb6704c3 [2024-11-07 16:15:37,045 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b739ebf7f/d67bb134b2de4fdea5ff91339451e8b3 [2024-11-07 16:15:37,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 16:15:37,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 16:15:37,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 16:15:37,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 16:15:37,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 16:15:37,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7672bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37, skipping insertion in model container [2024-11-07 16:15:37,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 16:15:37,318 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 16:15:37,318 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 16:15:37,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:15:37,330 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 16:15:37,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:15:37,399 INFO L204 MainTranslator]: Completed translation [2024-11-07 16:15:37,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37 WrapperNode [2024-11-07 16:15:37,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 16:15:37,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 16:15:37,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 16:15:37,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 16:15:37,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,451 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107 [2024-11-07 16:15:37,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 16:15:37,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 16:15:37,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 16:15:37,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 16:15:37,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,478 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [5, 4]. 56 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-11-07 16:15:37,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 16:15:37,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 16:15:37,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 16:15:37,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 16:15:37,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:15:37,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:37,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 16:15:37,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 16:15:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 16:15:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 16:15:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 16:15:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 16:15:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 16:15:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 16:15:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 16:15:37,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 16:15:37,683 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 16:15:37,684 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 16:15:37,924 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-11-07 16:15:37,924 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 16:15:37,932 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 16:15:37,932 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 16:15:37,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:15:37 BoogieIcfgContainer [2024-11-07 16:15:37,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 16:15:37,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 16:15:37,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 16:15:37,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 16:15:37,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:15:37" (1/3) ... [2024-11-07 16:15:37,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509aa847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:15:37, skipping insertion in model container [2024-11-07 16:15:37,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (2/3) ... [2024-11-07 16:15:37,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509aa847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:15:37, skipping insertion in model container [2024-11-07 16:15:37,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:15:37" (3/3) ... [2024-11-07 16:15:37,942 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrcspn-alloca-1.i [2024-11-07 16:15:37,957 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 16:15:37,957 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-11-07 16:15:37,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 16:15:38,010 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=None, 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;@4b0449fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 16:15:38,011 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-07 16:15:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 54 states have internal predecessors, (66), 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) [2024-11-07 16:15:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-07 16:15:38,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:38,021 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:38,021 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:38,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:38,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2024-11-07 16:15:38,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235884350] [2024-11-07 16:15:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:38,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:38,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:38,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235884350] [2024-11-07 16:15:38,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235884350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:38,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:38,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:15:38,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638008282] [2024-11-07 16:15:38,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:38,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:38,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:38,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:38,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:38,313 INFO L87 Difference]: Start difference. First operand has 55 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 54 states have internal predecessors, (66), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-07 16:15:38,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:38,363 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2024-11-07 16:15:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:38,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2024-11-07 16:15:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:38,370 INFO L225 Difference]: With dead ends: 68 [2024-11-07 16:15:38,371 INFO L226 Difference]: Without dead ends: 66 [2024-11-07 16:15:38,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:38,377 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 12 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:38,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 122 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-07 16:15:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2024-11-07 16:15:38,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 55 states have internal predecessors, (64), 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) [2024-11-07 16:15:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-07 16:15:38,416 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 7 [2024-11-07 16:15:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:38,416 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-07 16:15:38,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-07 16:15:38,416 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-07 16:15:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-07 16:15:38,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:38,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:38,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 16:15:38,417 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:38,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2024-11-07 16:15:38,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:38,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026429097] [2024-11-07 16:15:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:38,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:38,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026429097] [2024-11-07 16:15:38,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026429097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:38,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:38,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:15:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935827942] [2024-11-07 16:15:38,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:38,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:15:38,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:38,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:15:38,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:15:38,556 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-07 16:15:38,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:38,596 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-11-07 16:15:38,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:15:38,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-07 16:15:38,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:38,597 INFO L225 Difference]: With dead ends: 54 [2024-11-07 16:15:38,600 INFO L226 Difference]: Without dead ends: 54 [2024-11-07 16:15:38,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:15:38,601 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:38,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 71 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:38,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-07 16:15:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-07 16:15:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 53 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) [2024-11-07 16:15:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-07 16:15:38,606 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 7 [2024-11-07 16:15:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:38,606 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-07 16:15:38,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-07 16:15:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-07 16:15:38,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-07 16:15:38,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:38,607 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:38,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 16:15:38,607 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:38,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2024-11-07 16:15:38,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:38,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882720229] [2024-11-07 16:15:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:38,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:38,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:38,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882720229] [2024-11-07 16:15:38,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882720229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:38,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:38,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:15:38,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055760001] [2024-11-07 16:15:38,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:38,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:15:38,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:38,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:15:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:15:38,877 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-11-07 16:15:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:39,031 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2024-11-07 16:15:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:15:39,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2024-11-07 16:15:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:39,033 INFO L225 Difference]: With dead ends: 58 [2024-11-07 16:15:39,033 INFO L226 Difference]: Without dead ends: 58 [2024-11-07 16:15:39,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:15:39,035 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 26 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:39,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-07 16:15:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-07 16:15:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 55 states have internal predecessors, (65), 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) [2024-11-07 16:15:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-07 16:15:39,043 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 7 [2024-11-07 16:15:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:39,043 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-07 16:15:39,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-11-07 16:15:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-07 16:15:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-07 16:15:39,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:39,044 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:39,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 16:15:39,046 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:39,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2024-11-07 16:15:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:39,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558453194] [2024-11-07 16:15:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:39,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:39,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:39,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558453194] [2024-11-07 16:15:39,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558453194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:39,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:39,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:15:39,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835291279] [2024-11-07 16:15:39,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:39,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:39,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:39,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:39,112 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-07 16:15:39,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:39,146 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2024-11-07 16:15:39,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:39,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2024-11-07 16:15:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:39,148 INFO L225 Difference]: With dead ends: 73 [2024-11-07 16:15:39,148 INFO L226 Difference]: Without dead ends: 73 [2024-11-07 16:15:39,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:39,150 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:39,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 113 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-07 16:15:39,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2024-11-07 16:15:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.58) internal successors, (79), 66 states have internal predecessors, (79), 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) [2024-11-07 16:15:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2024-11-07 16:15:39,159 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 9 [2024-11-07 16:15:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:39,159 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2024-11-07 16:15:39,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-07 16:15:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2024-11-07 16:15:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-07 16:15:39,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:39,161 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:39,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 16:15:39,161 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:39,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:39,163 INFO L85 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2024-11-07 16:15:39,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:39,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957216297] [2024-11-07 16:15:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:39,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:39,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957216297] [2024-11-07 16:15:39,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957216297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:39,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:39,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:15:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520732536] [2024-11-07 16:15:39,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:39,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:15:39,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:15:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:15:39,203 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-07 16:15:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:39,244 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-07 16:15:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:15:39,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-11-07 16:15:39,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:39,245 INFO L225 Difference]: With dead ends: 65 [2024-11-07 16:15:39,246 INFO L226 Difference]: Without dead ends: 65 [2024-11-07 16:15:39,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:15:39,246 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 13 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:39,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 71 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-07 16:15:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-07 16:15:39,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.54) internal successors, (77), 64 states have internal predecessors, (77), 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) [2024-11-07 16:15:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2024-11-07 16:15:39,255 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 9 [2024-11-07 16:15:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:39,256 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2024-11-07 16:15:39,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-07 16:15:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2024-11-07 16:15:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-07 16:15:39,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:39,256 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:39,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 16:15:39,256 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:39,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2024-11-07 16:15:39,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:39,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134423082] [2024-11-07 16:15:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:39,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:39,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:39,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134423082] [2024-11-07 16:15:39,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134423082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:39,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:39,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:15:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866746509] [2024-11-07 16:15:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:39,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:15:39,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:15:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:15:39,473 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-07 16:15:39,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:39,588 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2024-11-07 16:15:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:15:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2024-11-07 16:15:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:39,592 INFO L225 Difference]: With dead ends: 69 [2024-11-07 16:15:39,592 INFO L226 Difference]: Without dead ends: 69 [2024-11-07 16:15:39,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:15:39,593 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 22 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:39,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 153 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-07 16:15:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-11-07 16:15:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 66 states have internal predecessors, (80), 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) [2024-11-07 16:15:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-07 16:15:39,602 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 9 [2024-11-07 16:15:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:39,602 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-07 16:15:39,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-07 16:15:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-07 16:15:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-07 16:15:39,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:39,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:39,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 16:15:39,604 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:39,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:39,605 INFO L85 PathProgramCache]: Analyzing trace with hash 629683416, now seen corresponding path program 1 times [2024-11-07 16:15:39,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:39,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16279295] [2024-11-07 16:15:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:39,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:39,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:39,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16279295] [2024-11-07 16:15:39,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16279295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:39,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:39,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:15:39,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808099289] [2024-11-07 16:15:39,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:39,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:39,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:39,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:39,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:39,751 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-07 16:15:39,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:39,770 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2024-11-07 16:15:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:39,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 [2024-11-07 16:15:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:39,772 INFO L225 Difference]: With dead ends: 79 [2024-11-07 16:15:39,773 INFO L226 Difference]: Without dead ends: 79 [2024-11-07 16:15:39,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:39,773 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:39,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-07 16:15:39,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2024-11-07 16:15:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.492063492063492) internal successors, (94), 77 states have internal predecessors, (94), 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) [2024-11-07 16:15:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2024-11-07 16:15:39,779 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 10 [2024-11-07 16:15:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:39,779 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2024-11-07 16:15:39,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-07 16:15:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2024-11-07 16:15:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-07 16:15:39,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:39,780 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:39,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 16:15:39,780 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:39,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash -179663210, now seen corresponding path program 1 times [2024-11-07 16:15:39,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:39,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140659396] [2024-11-07 16:15:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:39,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140659396] [2024-11-07 16:15:39,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140659396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:39,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:39,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:15:39,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192036408] [2024-11-07 16:15:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:39,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:15:39,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:39,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:15:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:15:39,950 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2024-11-07 16:15:40,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:40,010 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2024-11-07 16:15:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:15:40,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2024-11-07 16:15:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:40,011 INFO L225 Difference]: With dead ends: 94 [2024-11-07 16:15:40,011 INFO L226 Difference]: Without dead ends: 94 [2024-11-07 16:15:40,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:15:40,012 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 29 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:40,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 111 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-07 16:15:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2024-11-07 16:15:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.492063492063492) internal successors, (94), 77 states have internal predecessors, (94), 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) [2024-11-07 16:15:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2024-11-07 16:15:40,017 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 10 [2024-11-07 16:15:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:40,018 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2024-11-07 16:15:40,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2024-11-07 16:15:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2024-11-07 16:15:40,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-07 16:15:40,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:40,019 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:40,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 16:15:40,019 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:40,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:40,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1954650589, now seen corresponding path program 1 times [2024-11-07 16:15:40,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:40,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897913513] [2024-11-07 16:15:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:40,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:40,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:40,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897913513] [2024-11-07 16:15:40,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897913513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:40,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:40,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:15:40,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121197406] [2024-11-07 16:15:40,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:40,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:40,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:40,151 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-07 16:15:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:40,176 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2024-11-07 16:15:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2024-11-07 16:15:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:40,177 INFO L225 Difference]: With dead ends: 85 [2024-11-07 16:15:40,177 INFO L226 Difference]: Without dead ends: 85 [2024-11-07 16:15:40,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:40,178 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:40,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 97 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-07 16:15:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-11-07 16:15:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 82 states have internal predecessors, (100), 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) [2024-11-07 16:15:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2024-11-07 16:15:40,182 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 11 [2024-11-07 16:15:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:40,183 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2024-11-07 16:15:40,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-07 16:15:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2024-11-07 16:15:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-07 16:15:40,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:40,183 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:40,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 16:15:40,184 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:40,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1530970081, now seen corresponding path program 1 times [2024-11-07 16:15:40,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:40,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871151939] [2024-11-07 16:15:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:40,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:40,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:40,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871151939] [2024-11-07 16:15:40,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871151939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:40,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:40,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:15:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457703432] [2024-11-07 16:15:40,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:40,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:15:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:15:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:15:40,311 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-07 16:15:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:40,352 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2024-11-07 16:15:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:15:40,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2024-11-07 16:15:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:40,354 INFO L225 Difference]: With dead ends: 82 [2024-11-07 16:15:40,354 INFO L226 Difference]: Without dead ends: 82 [2024-11-07 16:15:40,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:15:40,355 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:40,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 132 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:40,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-07 16:15:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2024-11-07 16:15:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 76 states have internal predecessors, (93), 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) [2024-11-07 16:15:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2024-11-07 16:15:40,362 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 11 [2024-11-07 16:15:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:40,363 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2024-11-07 16:15:40,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-07 16:15:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2024-11-07 16:15:40,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-07 16:15:40,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:40,363 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:40,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 16:15:40,363 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:40,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:40,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2024-11-07 16:15:40,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:40,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509504771] [2024-11-07 16:15:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:40,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:40,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:40,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509504771] [2024-11-07 16:15:40,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509504771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:40,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078816092] [2024-11-07 16:15:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:40,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:40,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:40,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:40,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 16:15:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:40,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 16:15:40,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:40,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:15:40,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-07 16:15:40,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-07 16:15:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:40,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:41,049 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 16:15:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:41,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078816092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:41,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:41,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-07 16:15:41,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177434417] [2024-11-07 16:15:41,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:41,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 16:15:41,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:41,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 16:15:41,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:15:41,070 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 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) [2024-11-07 16:15:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:41,242 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2024-11-07 16:15:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:15:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 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 11 [2024-11-07 16:15:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:41,243 INFO L225 Difference]: With dead ends: 82 [2024-11-07 16:15:41,243 INFO L226 Difference]: Without dead ends: 82 [2024-11-07 16:15:41,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-07 16:15:41,244 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 33 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:41,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 167 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-07 16:15:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2024-11-07 16:15:41,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.459016393442623) internal successors, (89), 73 states have internal predecessors, (89), 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) [2024-11-07 16:15:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2024-11-07 16:15:41,247 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 11 [2024-11-07 16:15:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:41,247 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2024-11-07 16:15:41,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 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) [2024-11-07 16:15:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2024-11-07 16:15:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 16:15:41,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:41,248 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:41,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 16:15:41,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 16:15:41,453 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:41,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1518507737, now seen corresponding path program 1 times [2024-11-07 16:15:41,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:41,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274126593] [2024-11-07 16:15:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:41,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274126593] [2024-11-07 16:15:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274126593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:41,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:15:41,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040385969] [2024-11-07 16:15:41,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:41,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:15:41,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:15:41,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:15:41,603 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-11-07 16:15:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:41,711 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2024-11-07 16:15:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:15:41,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2024-11-07 16:15:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:41,714 INFO L225 Difference]: With dead ends: 97 [2024-11-07 16:15:41,714 INFO L226 Difference]: Without dead ends: 97 [2024-11-07 16:15:41,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:15:41,714 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 43 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:41,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 137 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-07 16:15:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 77. [2024-11-07 16:15:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 64 states have (on average 1.484375) internal successors, (95), 76 states have internal predecessors, (95), 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) [2024-11-07 16:15:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2024-11-07 16:15:41,721 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 13 [2024-11-07 16:15:41,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:41,722 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2024-11-07 16:15:41,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-11-07 16:15:41,722 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2024-11-07 16:15:41,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 16:15:41,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:41,724 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:41,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 16:15:41,724 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:41,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:41,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1518507738, now seen corresponding path program 1 times [2024-11-07 16:15:41,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:41,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171946587] [2024-11-07 16:15:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:41,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:41,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:41,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171946587] [2024-11-07 16:15:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171946587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:41,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:41,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:15:41,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33424839] [2024-11-07 16:15:41,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:41,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:41,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:41,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:41,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:41,778 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-07 16:15:41,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:41,823 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-11-07 16:15:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:41,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-07 16:15:41,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:41,824 INFO L225 Difference]: With dead ends: 75 [2024-11-07 16:15:41,824 INFO L226 Difference]: Without dead ends: 75 [2024-11-07 16:15:41,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:41,827 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:41,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 68 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-07 16:15:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-07 16:15:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 64 states have (on average 1.421875) internal successors, (91), 74 states have internal predecessors, (91), 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) [2024-11-07 16:15:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2024-11-07 16:15:41,831 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 13 [2024-11-07 16:15:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:41,831 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2024-11-07 16:15:41,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-07 16:15:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2024-11-07 16:15:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 16:15:41,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:41,832 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:41,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 16:15:41,832 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:41,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2024-11-07 16:15:41,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509853999] [2024-11-07 16:15:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:42,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509853999] [2024-11-07 16:15:42,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509853999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868180322] [2024-11-07 16:15:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:42,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:42,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:42,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 16:15:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:42,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 16:15:42,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:42,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-07 16:15:42,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-07 16:15:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:42,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:42,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868180322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:42,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:42,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-07 16:15:42,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206194561] [2024-11-07 16:15:42,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:42,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 16:15:42,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:42,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 16:15:42,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-07 16:15:42,503 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 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) [2024-11-07 16:15:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:42,728 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2024-11-07 16:15:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:15:42,729 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 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) Word has length 13 [2024-11-07 16:15:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:42,729 INFO L225 Difference]: With dead ends: 80 [2024-11-07 16:15:42,729 INFO L226 Difference]: Without dead ends: 80 [2024-11-07 16:15:42,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-07 16:15:42,730 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 20 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:42,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 223 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-07 16:15:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2024-11-07 16:15:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.3833333333333333) internal successors, (83), 69 states have internal predecessors, (83), 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) [2024-11-07 16:15:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2024-11-07 16:15:42,733 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 13 [2024-11-07 16:15:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:42,733 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2024-11-07 16:15:42,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 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) [2024-11-07 16:15:42,733 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2024-11-07 16:15:42,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-07 16:15:42,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:42,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:42,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 16:15:42,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:42,935 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:42,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:42,936 INFO L85 PathProgramCache]: Analyzing trace with hash -115553677, now seen corresponding path program 1 times [2024-11-07 16:15:42,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:42,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434412289] [2024-11-07 16:15:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:42,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:43,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:43,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434412289] [2024-11-07 16:15:43,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434412289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:43,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:15:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051075559] [2024-11-07 16:15:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:43,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:15:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:15:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:15:43,125 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2024-11-07 16:15:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:43,146 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2024-11-07 16:15:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:15:43,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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 14 [2024-11-07 16:15:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:43,147 INFO L225 Difference]: With dead ends: 69 [2024-11-07 16:15:43,147 INFO L226 Difference]: Without dead ends: 69 [2024-11-07 16:15:43,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:15:43,148 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 18 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:43,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 79 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:43,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-07 16:15:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2024-11-07 16:15:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 57 states have internal predecessors, (68), 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) [2024-11-07 16:15:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-07 16:15:43,151 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 14 [2024-11-07 16:15:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:43,151 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-07 16:15:43,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2024-11-07 16:15:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-07 16:15:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:15:43,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:43,152 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:43,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 16:15:43,152 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:43,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1758099989, now seen corresponding path program 1 times [2024-11-07 16:15:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:43,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306517846] [2024-11-07 16:15:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:43,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:43,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306517846] [2024-11-07 16:15:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306517846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:43,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:43,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:15:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061192944] [2024-11-07 16:15:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:43,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:43,277 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-07 16:15:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:43,306 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-11-07 16:15:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:43,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2024-11-07 16:15:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:43,307 INFO L225 Difference]: With dead ends: 57 [2024-11-07 16:15:43,308 INFO L226 Difference]: Without dead ends: 54 [2024-11-07 16:15:43,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:43,309 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:43,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 68 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-07 16:15:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-07 16:15:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 53 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) [2024-11-07 16:15:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-07 16:15:43,311 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 17 [2024-11-07 16:15:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:43,312 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-07 16:15:43,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-07 16:15:43,312 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-07 16:15:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:15:43,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:43,313 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:43,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 16:15:43,313 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:43,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1758116909, now seen corresponding path program 1 times [2024-11-07 16:15:43,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:43,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469433713] [2024-11-07 16:15:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:43,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:43,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469433713] [2024-11-07 16:15:43,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469433713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:43,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:43,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:15:43,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317436151] [2024-11-07 16:15:43,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:43,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:15:43,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:43,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:15:43,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:15:43,456 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-07 16:15:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:43,573 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2024-11-07 16:15:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:15:43,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 17 [2024-11-07 16:15:43,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:43,574 INFO L225 Difference]: With dead ends: 66 [2024-11-07 16:15:43,574 INFO L226 Difference]: Without dead ends: 66 [2024-11-07 16:15:43,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:15:43,575 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:43,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 103 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-07 16:15:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2024-11-07 16:15:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 60 states have internal predecessors, (74), 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) [2024-11-07 16:15:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2024-11-07 16:15:43,577 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 17 [2024-11-07 16:15:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:43,577 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2024-11-07 16:15:43,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-07 16:15:43,577 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2024-11-07 16:15:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:15:43,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:43,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:43,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 16:15:43,578 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:43,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1758116908, now seen corresponding path program 1 times [2024-11-07 16:15:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557922361] [2024-11-07 16:15:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:43,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:43,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557922361] [2024-11-07 16:15:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557922361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:43,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:43,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:15:43,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234485323] [2024-11-07 16:15:43,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:43,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:15:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:43,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:15:43,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:15:43,636 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-07 16:15:43,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:43,680 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-07 16:15:43,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:15:43,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2024-11-07 16:15:43,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:43,681 INFO L225 Difference]: With dead ends: 58 [2024-11-07 16:15:43,681 INFO L226 Difference]: Without dead ends: 58 [2024-11-07 16:15:43,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:15:43,682 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 40 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:43,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 72 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-07 16:15:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-07 16:15:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 57 states have internal predecessors, (68), 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) [2024-11-07 16:15:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-07 16:15:43,684 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 17 [2024-11-07 16:15:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:43,684 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-07 16:15:43,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-07 16:15:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-07 16:15:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-07 16:15:43,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:43,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:43,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 16:15:43,685 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:43,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1334894212, now seen corresponding path program 1 times [2024-11-07 16:15:43,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:43,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826248123] [2024-11-07 16:15:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:43,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:43,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:43,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826248123] [2024-11-07 16:15:43,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826248123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:43,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:43,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:15:43,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680251796] [2024-11-07 16:15:43,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:43,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:15:43,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:43,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:15:43,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:15:43,712 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-07 16:15:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:43,721 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2024-11-07 16:15:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:15:43,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2024-11-07 16:15:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:43,722 INFO L225 Difference]: With dead ends: 60 [2024-11-07 16:15:43,722 INFO L226 Difference]: Without dead ends: 60 [2024-11-07 16:15:43,722 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 [2024-11-07 16:15:43,723 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:43,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:43,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-07 16:15:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-07 16:15:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 59 states have internal predecessors, (70), 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) [2024-11-07 16:15:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-11-07 16:15:43,724 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 21 [2024-11-07 16:15:43,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:43,724 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-11-07 16:15:43,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-11-07 16:15:43,724 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-11-07 16:15:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-07 16:15:43,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:43,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:43,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 16:15:43,725 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:43,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:43,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1367741855, now seen corresponding path program 1 times [2024-11-07 16:15:43,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:43,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435608525] [2024-11-07 16:15:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:43,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:43,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:43,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435608525] [2024-11-07 16:15:43,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435608525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:43,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:43,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:15:43,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153888276] [2024-11-07 16:15:43,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:43,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:15:43,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:43,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:15:43,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:15:43,914 INFO L87 Difference]: Start difference. First operand 60 states and 70 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) [2024-11-07 16:15:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:43,954 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-11-07 16:15:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:15:43,954 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 23 [2024-11-07 16:15:43,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:43,955 INFO L225 Difference]: With dead ends: 73 [2024-11-07 16:15:43,955 INFO L226 Difference]: Without dead ends: 55 [2024-11-07 16:15:43,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:15:43,956 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:43,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 174 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-07 16:15:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-07 16:15:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.26) internal successors, (63), 54 states have internal predecessors, (63), 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) [2024-11-07 16:15:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-11-07 16:15:43,958 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 23 [2024-11-07 16:15:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:43,958 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-11-07 16:15:43,958 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) [2024-11-07 16:15:43,958 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-11-07 16:15:43,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-07 16:15:43,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:43,959 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:43,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 16:15:43,959 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:43,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:43,960 INFO L85 PathProgramCache]: Analyzing trace with hash -945040029, now seen corresponding path program 1 times [2024-11-07 16:15:43,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:43,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412667135] [2024-11-07 16:15:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:43,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:44,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:44,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412667135] [2024-11-07 16:15:44,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412667135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:44,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:44,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 16:15:44,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746574191] [2024-11-07 16:15:44,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:44,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:15:44,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:15:44,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:15:44,145 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2024-11-07 16:15:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:44,198 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2024-11-07 16:15:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:15:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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 23 [2024-11-07 16:15:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:44,199 INFO L225 Difference]: With dead ends: 76 [2024-11-07 16:15:44,199 INFO L226 Difference]: Without dead ends: 63 [2024-11-07 16:15:44,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:15:44,200 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 29 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:44,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 165 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-07 16:15:44,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2024-11-07 16:15:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.25) internal successors, (65), 56 states have internal predecessors, (65), 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) [2024-11-07 16:15:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2024-11-07 16:15:44,202 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 23 [2024-11-07 16:15:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:44,202 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2024-11-07 16:15:44,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2024-11-07 16:15:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2024-11-07 16:15:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-07 16:15:44,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:44,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:44,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 16:15:44,203 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:44,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:44,204 INFO L85 PathProgramCache]: Analyzing trace with hash 587761830, now seen corresponding path program 1 times [2024-11-07 16:15:44,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:44,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281161616] [2024-11-07 16:15:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:44,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:44,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:44,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281161616] [2024-11-07 16:15:44,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281161616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:44,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:44,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:15:44,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783297090] [2024-11-07 16:15:44,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:44,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 16:15:44,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:44,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 16:15:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:15:44,399 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2024-11-07 16:15:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:44,485 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2024-11-07 16:15:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:15:44,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) Word has length 27 [2024-11-07 16:15:44,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:44,487 INFO L225 Difference]: With dead ends: 77 [2024-11-07 16:15:44,488 INFO L226 Difference]: Without dead ends: 77 [2024-11-07 16:15:44,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-07 16:15:44,489 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:44,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 228 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:44,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-07 16:15:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-11-07 16:15:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 74 states have internal predecessors, (85), 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) [2024-11-07 16:15:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2024-11-07 16:15:44,494 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2024-11-07 16:15:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:44,494 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2024-11-07 16:15:44,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2024-11-07 16:15:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2024-11-07 16:15:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-07 16:15:44,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:44,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:44,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 16:15:44,495 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:44,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash 453748324, now seen corresponding path program 1 times [2024-11-07 16:15:44,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:44,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922943403] [2024-11-07 16:15:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:44,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:44,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:44,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922943403] [2024-11-07 16:15:44,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922943403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:44,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001833315] [2024-11-07 16:15:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:44,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:44,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:44,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:44,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 16:15:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:44,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 16:15:44,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:44,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 16:15:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:45,067 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:15:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001833315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:45,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:15:45,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-07 16:15:45,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252619102] [2024-11-07 16:15:45,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:45,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:15:45,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:15:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:15:45,069 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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) [2024-11-07 16:15:45,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:45,195 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2024-11-07 16:15:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:15:45,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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) Word has length 27 [2024-11-07 16:15:45,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:45,197 INFO L225 Difference]: With dead ends: 99 [2024-11-07 16:15:45,197 INFO L226 Difference]: Without dead ends: 99 [2024-11-07 16:15:45,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:15:45,198 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 39 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:45,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 208 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:45,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-07 16:15:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2024-11-07 16:15:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 75 states have internal predecessors, (87), 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) [2024-11-07 16:15:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2024-11-07 16:15:45,201 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2024-11-07 16:15:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:45,202 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2024-11-07 16:15:45,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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) [2024-11-07 16:15:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2024-11-07 16:15:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-07 16:15:45,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:45,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:45,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 16:15:45,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:45,408 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:45,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:45,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1221203167, now seen corresponding path program 1 times [2024-11-07 16:15:45,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:45,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737894787] [2024-11-07 16:15:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:45,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:45,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:45,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737894787] [2024-11-07 16:15:45,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737894787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:45,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772507609] [2024-11-07 16:15:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:45,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:45,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:45,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:45,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 16:15:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:45,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 16:15:45,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:45,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:45,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-07 16:15:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:45,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772507609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:45,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:45,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-07 16:15:45,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789787591] [2024-11-07 16:15:45,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:45,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 16:15:45,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:45,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 16:15:45,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-07 16:15:45,925 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 17 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 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) [2024-11-07 16:15:46,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:46,101 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2024-11-07 16:15:46,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:15:46,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 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 28 [2024-11-07 16:15:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:46,103 INFO L225 Difference]: With dead ends: 147 [2024-11-07 16:15:46,103 INFO L226 Difference]: Without dead ends: 147 [2024-11-07 16:15:46,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:15:46,104 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 76 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:46,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 297 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:15:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-07 16:15:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 104. [2024-11-07 16:15:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.21) internal successors, (121), 103 states have internal predecessors, (121), 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) [2024-11-07 16:15:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2024-11-07 16:15:46,107 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 28 [2024-11-07 16:15:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:46,107 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2024-11-07 16:15:46,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 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) [2024-11-07 16:15:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2024-11-07 16:15:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-07 16:15:46,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:46,108 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:46,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 16:15:46,312 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,SelfDestructingSolverStorable23 [2024-11-07 16:15:46,313 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:46,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2014108569, now seen corresponding path program 1 times [2024-11-07 16:15:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178717187] [2024-11-07 16:15:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:46,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178717187] [2024-11-07 16:15:46,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178717187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855156595] [2024-11-07 16:15:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:46,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:46,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:46,569 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) [2024-11-07 16:15:46,570 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 [2024-11-07 16:15:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:46,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 16:15:46,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:46,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 16:15:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:46,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:47,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855156595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:47,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:47,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-07 16:15:47,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084496367] [2024-11-07 16:15:47,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:47,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 16:15:47,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 16:15:47,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-07 16:15:47,077 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 23 states have internal predecessors, (84), 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) [2024-11-07 16:15:47,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:47,332 INFO L93 Difference]: Finished difference Result 122 states and 140 transitions. [2024-11-07 16:15:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 16:15:47,332 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 23 states have internal predecessors, (84), 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 31 [2024-11-07 16:15:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:47,333 INFO L225 Difference]: With dead ends: 122 [2024-11-07 16:15:47,333 INFO L226 Difference]: Without dead ends: 122 [2024-11-07 16:15:47,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:15:47,335 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 139 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:47,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 244 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:15:47,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-07 16:15:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 100. [2024-11-07 16:15:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 99 states have internal predecessors, (115), 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) [2024-11-07 16:15:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2024-11-07 16:15:47,340 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 31 [2024-11-07 16:15:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:47,341 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2024-11-07 16:15:47,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 23 states have internal predecessors, (84), 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) [2024-11-07 16:15:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2024-11-07 16:15:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-07 16:15:47,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:47,341 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:47,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 16:15:47,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-07 16:15:47,542 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:47,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1407041307, now seen corresponding path program 2 times [2024-11-07 16:15:47,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:47,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261905962] [2024-11-07 16:15:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:47,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261905962] [2024-11-07 16:15:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261905962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043751570] [2024-11-07 16:15:47,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:15:47,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:47,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:47,895 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) [2024-11-07 16:15:47,897 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 [2024-11-07 16:15:47,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:15:47,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:47,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 16:15:47,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:48,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-07 16:15:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:48,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:48,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-07 16:15:48,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-07 16:15:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:48,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043751570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:48,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:48,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2024-11-07 16:15:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527089909] [2024-11-07 16:15:48,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:48,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 16:15:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 16:15:48,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2024-11-07 16:15:48,259 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 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) [2024-11-07 16:15:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:48,623 INFO L93 Difference]: Finished difference Result 151 states and 171 transitions. [2024-11-07 16:15:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 16:15:48,624 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 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 37 [2024-11-07 16:15:48,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:48,624 INFO L225 Difference]: With dead ends: 151 [2024-11-07 16:15:48,624 INFO L226 Difference]: Without dead ends: 151 [2024-11-07 16:15:48,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 16:15:48,625 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 50 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:48,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 571 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:15:48,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-07 16:15:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2024-11-07 16:15:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 1.1631205673758864) internal successors, (164), 142 states have internal predecessors, (164), 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) [2024-11-07 16:15:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 164 transitions. [2024-11-07 16:15:48,634 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 164 transitions. Word has length 37 [2024-11-07 16:15:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:48,635 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 164 transitions. [2024-11-07 16:15:48,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 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) [2024-11-07 16:15:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 164 transitions. [2024-11-07 16:15:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-07 16:15:48,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:48,636 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:48,652 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 [2024-11-07 16:15:48,840 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,SelfDestructingSolverStorable25 [2024-11-07 16:15:48,841 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:48,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:48,842 INFO L85 PathProgramCache]: Analyzing trace with hash -237093940, now seen corresponding path program 2 times [2024-11-07 16:15:48,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:48,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131856135] [2024-11-07 16:15:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:48,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:49,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:49,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131856135] [2024-11-07 16:15:49,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131856135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:49,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447738154] [2024-11-07 16:15:49,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:15:49,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:49,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:49,130 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) [2024-11-07 16:15:49,132 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 [2024-11-07 16:15:49,225 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:15:49,225 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:49,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-07 16:15:49,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:49,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-07 16:15:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:49,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:49,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-07 16:15:49,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-07 16:15:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:49,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447738154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:49,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:49,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 23 [2024-11-07 16:15:49,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634805051] [2024-11-07 16:15:49,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:49,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 16:15:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 16:15:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-11-07 16:15:49,512 INFO L87 Difference]: Start difference. First operand 143 states and 164 transitions. Second operand has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 23 states have internal predecessors, (74), 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) [2024-11-07 16:15:49,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:49,692 INFO L93 Difference]: Finished difference Result 237 states and 266 transitions. [2024-11-07 16:15:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:15:49,692 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 23 states have internal predecessors, (74), 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 39 [2024-11-07 16:15:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:49,693 INFO L225 Difference]: With dead ends: 237 [2024-11-07 16:15:49,694 INFO L226 Difference]: Without dead ends: 189 [2024-11-07 16:15:49,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:15:49,695 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 27 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:49,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 446 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-07 16:15:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 182. [2024-11-07 16:15:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.1444444444444444) internal successors, (206), 181 states have internal predecessors, (206), 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) [2024-11-07 16:15:49,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 206 transitions. [2024-11-07 16:15:49,700 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 206 transitions. Word has length 39 [2024-11-07 16:15:49,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:49,700 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 206 transitions. [2024-11-07 16:15:49,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 23 states have internal predecessors, (74), 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) [2024-11-07 16:15:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 206 transitions. [2024-11-07 16:15:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 16:15:49,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:49,701 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:49,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 16:15:49,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:49,901 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:49,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:49,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1521341790, now seen corresponding path program 3 times [2024-11-07 16:15:49,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:49,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438032460] [2024-11-07 16:15:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:49,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:50,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:50,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438032460] [2024-11-07 16:15:50,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438032460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:50,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166755029] [2024-11-07 16:15:50,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:15:50,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:50,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:50,199 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) [2024-11-07 16:15:50,201 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 [2024-11-07 16:15:50,293 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 16:15:50,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:50,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 16:15:50,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:50,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:50,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-07 16:15:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:50,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166755029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:50,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:50,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2024-11-07 16:15:50,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744223286] [2024-11-07 16:15:50,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:50,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 16:15:50,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:50,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 16:15:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:15:50,757 INFO L87 Difference]: Start difference. First operand 182 states and 206 transitions. Second operand has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 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) [2024-11-07 16:15:51,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:51,072 INFO L93 Difference]: Finished difference Result 228 states and 259 transitions. [2024-11-07 16:15:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 16:15:51,072 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 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 41 [2024-11-07 16:15:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:51,073 INFO L225 Difference]: With dead ends: 228 [2024-11-07 16:15:51,074 INFO L226 Difference]: Without dead ends: 228 [2024-11-07 16:15:51,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2024-11-07 16:15:51,075 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 78 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:51,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 406 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:15:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-07 16:15:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 200. [2024-11-07 16:15:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 198 states have (on average 1.1515151515151516) internal successors, (228), 199 states have internal predecessors, (228), 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) [2024-11-07 16:15:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 228 transitions. [2024-11-07 16:15:51,085 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 228 transitions. Word has length 41 [2024-11-07 16:15:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:51,086 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 228 transitions. [2024-11-07 16:15:51,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 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) [2024-11-07 16:15:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 228 transitions. [2024-11-07 16:15:51,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-07 16:15:51,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:51,086 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:51,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-07 16:15:51,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-07 16:15:51,287 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:51,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:51,287 INFO L85 PathProgramCache]: Analyzing trace with hash -135657201, now seen corresponding path program 3 times [2024-11-07 16:15:51,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:51,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246485713] [2024-11-07 16:15:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:51,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246485713] [2024-11-07 16:15:51,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246485713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056796868] [2024-11-07 16:15:51,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:15:51,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:51,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:51,490 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) [2024-11-07 16:15:51,492 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 [2024-11-07 16:15:51,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 16:15:51,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:51,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 16:15:51,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:51,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:51,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-07 16:15:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:51,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056796868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:51,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:51,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2024-11-07 16:15:51,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048445349] [2024-11-07 16:15:51,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:51,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 16:15:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 16:15:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:15:51,976 INFO L87 Difference]: Start difference. First operand 200 states and 228 transitions. Second operand has 22 states, 21 states have (on average 5.142857142857143) internal successors, (108), 22 states have internal predecessors, (108), 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) [2024-11-07 16:15:52,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:52,180 INFO L93 Difference]: Finished difference Result 310 states and 353 transitions. [2024-11-07 16:15:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:15:52,181 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.142857142857143) internal successors, (108), 22 states have internal predecessors, (108), 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 43 [2024-11-07 16:15:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:52,182 INFO L225 Difference]: With dead ends: 310 [2024-11-07 16:15:52,182 INFO L226 Difference]: Without dead ends: 310 [2024-11-07 16:15:52,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-11-07 16:15:52,183 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 99 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:52,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 397 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:15:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-07 16:15:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 255. [2024-11-07 16:15:52,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 253 states have (on average 1.1541501976284585) internal successors, (292), 254 states have internal predecessors, (292), 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) [2024-11-07 16:15:52,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 292 transitions. [2024-11-07 16:15:52,194 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 292 transitions. Word has length 43 [2024-11-07 16:15:52,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:52,194 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 292 transitions. [2024-11-07 16:15:52,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.142857142857143) internal successors, (108), 22 states have internal predecessors, (108), 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) [2024-11-07 16:15:52,196 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 292 transitions. [2024-11-07 16:15:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-07 16:15:52,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:52,197 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:52,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-07 16:15:52,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-07 16:15:52,398 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:52,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash 100113106, now seen corresponding path program 4 times [2024-11-07 16:15:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:52,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607350426] [2024-11-07 16:15:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:52,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:53,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:53,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607350426] [2024-11-07 16:15:53,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607350426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:53,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808224291] [2024-11-07 16:15:53,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 16:15:53,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:53,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:53,451 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) [2024-11-07 16:15:53,453 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 [2024-11-07 16:15:53,551 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 16:15:53,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:53,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-07 16:15:53,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:53,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-07 16:15:54,421 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-07 16:15:54,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 26 [2024-11-07 16:15:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:54,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:54,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-07 16:15:54,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:15:54,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2024-11-07 16:15:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808224291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:55,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:55,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 47 [2024-11-07 16:15:55,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203558084] [2024-11-07 16:15:55,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:55,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-07 16:15:55,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:55,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-07 16:15:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2024-11-07 16:15:55,011 INFO L87 Difference]: Start difference. First operand 255 states and 292 transitions. Second operand has 47 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 47 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) [2024-11-07 16:15:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:57,184 INFO L93 Difference]: Finished difference Result 400 states and 450 transitions. [2024-11-07 16:15:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-07 16:15:57,185 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 47 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 47 [2024-11-07 16:15:57,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:57,186 INFO L225 Difference]: With dead ends: 400 [2024-11-07 16:15:57,186 INFO L226 Difference]: Without dead ends: 377 [2024-11-07 16:15:57,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2326 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=786, Invalid=7046, Unknown=0, NotChecked=0, Total=7832 [2024-11-07 16:15:57,189 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 139 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:57,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 387 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-07 16:15:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-07 16:15:57,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 337. [2024-11-07 16:15:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.1582089552238806) internal successors, (388), 336 states have internal predecessors, (388), 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) [2024-11-07 16:15:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 388 transitions. [2024-11-07 16:15:57,198 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 388 transitions. Word has length 47 [2024-11-07 16:15:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:57,199 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 388 transitions. [2024-11-07 16:15:57,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 47 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) [2024-11-07 16:15:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 388 transitions. [2024-11-07 16:15:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-07 16:15:57,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:57,200 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:57,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 16:15:57,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:57,403 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:57,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:57,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1744763221, now seen corresponding path program 5 times [2024-11-07 16:15:57,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:57,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664980918] [2024-11-07 16:15:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:57,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:57,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664980918] [2024-11-07 16:15:57,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664980918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:57,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228490452] [2024-11-07 16:15:57,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 16:15:57,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:57,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:57,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:57,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 16:15:57,899 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-07 16:15:57,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:57,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-07 16:15:57,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:57,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-07 16:15:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:58,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:15:58,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228490452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:58,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-07 16:15:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45958562] [2024-11-07 16:15:58,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:58,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 16:15:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:58,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 16:15:58,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2024-11-07 16:15:58,545 INFO L87 Difference]: Start difference. First operand 337 states and 388 transitions. Second operand has 32 states, 31 states have (on average 4.258064516129032) internal successors, (132), 32 states have internal predecessors, (132), 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) [2024-11-07 16:15:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:58,943 INFO L93 Difference]: Finished difference Result 406 states and 468 transitions. [2024-11-07 16:15:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 16:15:58,944 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.258064516129032) internal successors, (132), 32 states have internal predecessors, (132), 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 51 [2024-11-07 16:15:58,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:58,945 INFO L225 Difference]: With dead ends: 406 [2024-11-07 16:15:58,945 INFO L226 Difference]: Without dead ends: 406 [2024-11-07 16:15:58,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2024-11-07 16:15:58,946 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 143 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:58,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 724 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:15:58,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-07 16:15:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 361. [2024-11-07 16:15:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 359 states have (on average 1.1643454038997214) internal successors, (418), 360 states have internal predecessors, (418), 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) [2024-11-07 16:15:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 418 transitions. [2024-11-07 16:15:58,956 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 418 transitions. Word has length 51 [2024-11-07 16:15:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:58,956 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 418 transitions. [2024-11-07 16:15:58,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.258064516129032) internal successors, (132), 32 states have internal predecessors, (132), 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) [2024-11-07 16:15:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 418 transitions. [2024-11-07 16:15:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-07 16:15:58,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:58,959 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:58,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-07 16:15:59,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-07 16:15:59,163 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:15:59,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1404253796, now seen corresponding path program 4 times [2024-11-07 16:15:59,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:59,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709026314] [2024-11-07 16:15:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:59,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:59,459 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:59,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:59,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709026314] [2024-11-07 16:15:59,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709026314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:59,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575258783] [2024-11-07 16:15:59,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 16:15:59,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:59,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:59,462 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:59,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-07 16:15:59,559 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 16:15:59,559 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:59,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-07 16:15:59,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:59,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-07 16:16:02,220 INFO L349 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2024-11-07 16:16:02,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 40 [2024-11-07 16:16:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 19 refuted. 1 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:16:02,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:03,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-07 16:16:03,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2024-11-07 16:16:03,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-07 16:16:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:16:03,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575258783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:03,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:03,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 28, 21] total 58 [2024-11-07 16:16:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362441527] [2024-11-07 16:16:03,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:03,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-07 16:16:03,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-07 16:16:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=2788, Unknown=1, NotChecked=0, Total=3306 [2024-11-07 16:16:03,767 INFO L87 Difference]: Start difference. First operand 361 states and 418 transitions. Second operand has 58 states, 58 states have (on average 2.396551724137931) internal successors, (139), 58 states have internal predecessors, (139), 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) [2024-11-07 16:16:08,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:16:08,166 INFO L93 Difference]: Finished difference Result 1041 states and 1190 transitions. [2024-11-07 16:16:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-07 16:16:08,166 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.396551724137931) internal successors, (139), 58 states have internal predecessors, (139), 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 54 [2024-11-07 16:16:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:16:08,168 INFO L225 Difference]: With dead ends: 1041 [2024-11-07 16:16:08,168 INFO L226 Difference]: Without dead ends: 452 [2024-11-07 16:16:08,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1855, Invalid=10134, Unknown=1, NotChecked=0, Total=11990 [2024-11-07 16:16:08,171 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 230 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:16:08,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 615 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-07 16:16:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-07 16:16:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 168. [2024-11-07 16:16:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.1497005988023952) internal successors, (192), 167 states have internal predecessors, (192), 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) [2024-11-07 16:16:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 192 transitions. [2024-11-07 16:16:08,180 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 192 transitions. Word has length 54 [2024-11-07 16:16:08,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:16:08,181 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 192 transitions. [2024-11-07 16:16:08,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.396551724137931) internal successors, (139), 58 states have internal predecessors, (139), 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) [2024-11-07 16:16:08,181 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 192 transitions. [2024-11-07 16:16:08,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-07 16:16:08,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:16:08,182 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:16:08,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-07 16:16:08,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:08,386 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:16:08,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:16:08,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1765430903, now seen corresponding path program 6 times [2024-11-07 16:16:08,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:16:08,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439279834] [2024-11-07 16:16:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:16:08,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:16:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:16:08,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439279834] [2024-11-07 16:16:08,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439279834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:16:08,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332795923] [2024-11-07 16:16:08,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 16:16:08,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:08,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:16:08,801 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:16:08,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-07 16:16:09,073 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-07 16:16:09,073 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:16:09,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-07 16:16:09,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:16:09,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-07 16:16:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:09,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:09,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-07 16:16:09,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-07 16:16:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:09,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332795923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:09,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:09,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 28 [2024-11-07 16:16:09,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721899606] [2024-11-07 16:16:09,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:09,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-07 16:16:09,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:09,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-07 16:16:09,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2024-11-07 16:16:09,361 INFO L87 Difference]: Start difference. First operand 168 states and 192 transitions. Second operand has 28 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 28 states have internal predecessors, (96), 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) [2024-11-07 16:16:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:16:09,793 INFO L93 Difference]: Finished difference Result 296 states and 334 transitions. [2024-11-07 16:16:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 16:16:09,793 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 28 states have internal predecessors, (96), 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 57 [2024-11-07 16:16:09,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:16:09,794 INFO L225 Difference]: With dead ends: 296 [2024-11-07 16:16:09,794 INFO L226 Difference]: Without dead ends: 189 [2024-11-07 16:16:09,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2024-11-07 16:16:09,795 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 77 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:16:09,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 637 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:16:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-07 16:16:09,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 180. [2024-11-07 16:16:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.1396648044692737) internal successors, (204), 179 states have internal predecessors, (204), 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) [2024-11-07 16:16:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2024-11-07 16:16:09,799 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 57 [2024-11-07 16:16:09,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:16:09,799 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2024-11-07 16:16:09,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 28 states have internal predecessors, (96), 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) [2024-11-07 16:16:09,799 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2024-11-07 16:16:09,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-07 16:16:09,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:16:09,800 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:16:09,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-07 16:16:10,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:10,005 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:16:10,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:16:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2034827188, now seen corresponding path program 7 times [2024-11-07 16:16:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:16:10,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008234849] [2024-11-07 16:16:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:16:10,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:16:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:16:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008234849] [2024-11-07 16:16:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008234849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:16:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359544286] [2024-11-07 16:16:10,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 16:16:10,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:10,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:16:10,494 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:16:10,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-07 16:16:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:10,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-07 16:16:10,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:16:10,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-07 16:16:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:10,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:11,133 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:11,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359544286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:11,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:11,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-07 16:16:11,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720350710] [2024-11-07 16:16:11,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:11,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-07 16:16:11,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:11,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-07 16:16:11,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1174, Unknown=0, NotChecked=0, Total=1332 [2024-11-07 16:16:11,135 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand has 37 states, 36 states have (on average 4.166666666666667) internal successors, (150), 37 states have internal predecessors, (150), 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) [2024-11-07 16:16:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:16:11,511 INFO L93 Difference]: Finished difference Result 233 states and 265 transitions. [2024-11-07 16:16:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 16:16:11,511 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.166666666666667) internal successors, (150), 37 states have internal predecessors, (150), 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 61 [2024-11-07 16:16:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:16:11,512 INFO L225 Difference]: With dead ends: 233 [2024-11-07 16:16:11,513 INFO L226 Difference]: Without dead ends: 233 [2024-11-07 16:16:11,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=1658, Unknown=0, NotChecked=0, Total=1892 [2024-11-07 16:16:11,514 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 171 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:16:11,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 651 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:16:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-07 16:16:11,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 198. [2024-11-07 16:16:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.1472081218274113) internal successors, (226), 197 states have internal predecessors, (226), 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) [2024-11-07 16:16:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions. [2024-11-07 16:16:11,521 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 61 [2024-11-07 16:16:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:16:11,521 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 226 transitions. [2024-11-07 16:16:11,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.166666666666667) internal successors, (150), 37 states have internal predecessors, (150), 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) [2024-11-07 16:16:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions. [2024-11-07 16:16:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-07 16:16:11,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:16:11,522 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:16:11,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-07 16:16:11,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-07 16:16:11,722 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:16:11,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:16:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash 990141248, now seen corresponding path program 8 times [2024-11-07 16:16:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:16:11,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66263751] [2024-11-07 16:16:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:16:11,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:16:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:12,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:16:12,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66263751] [2024-11-07 16:16:12,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66263751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:16:12,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930360015] [2024-11-07 16:16:12,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:16:12,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:12,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:16:12,209 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:16:12,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-07 16:16:12,321 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:16:12,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:16:12,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-07 16:16:12,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:16:12,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-07 16:16:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:12,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:12,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-07 16:16:12,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-07 16:16:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:12,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930360015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:12,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:12,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 31 [2024-11-07 16:16:12,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860392329] [2024-11-07 16:16:12,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:12,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 16:16:12,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 16:16:12,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2024-11-07 16:16:12,610 INFO L87 Difference]: Start difference. First operand 198 states and 226 transitions. Second operand has 31 states, 31 states have (on average 3.5483870967741935) internal successors, (110), 31 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) [2024-11-07 16:16:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:16:13,157 INFO L93 Difference]: Finished difference Result 348 states and 394 transitions. [2024-11-07 16:16:13,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 16:16:13,157 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.5483870967741935) internal successors, (110), 31 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 67 [2024-11-07 16:16:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:16:13,158 INFO L225 Difference]: With dead ends: 348 [2024-11-07 16:16:13,158 INFO L226 Difference]: Without dead ends: 219 [2024-11-07 16:16:13,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2024-11-07 16:16:13,159 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 142 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:16:13,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 722 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:16:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-07 16:16:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 210. [2024-11-07 16:16:13,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.138755980861244) internal successors, (238), 209 states have internal predecessors, (238), 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) [2024-11-07 16:16:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 238 transitions. [2024-11-07 16:16:13,163 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 238 transitions. Word has length 67 [2024-11-07 16:16:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:16:13,163 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 238 transitions. [2024-11-07 16:16:13,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.5483870967741935) internal successors, (110), 31 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) [2024-11-07 16:16:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 238 transitions. [2024-11-07 16:16:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-07 16:16:13,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:16:13,164 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:16:13,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-07 16:16:13,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-07 16:16:13,365 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:16:13,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:16:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash -269067709, now seen corresponding path program 9 times [2024-11-07 16:16:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:16:13,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349709394] [2024-11-07 16:16:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:16:13,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:16:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:13,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:16:13,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349709394] [2024-11-07 16:16:13,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349709394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:16:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798760183] [2024-11-07 16:16:13,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:16:13,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:16:13,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:16:13,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-07 16:16:13,976 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-07 16:16:13,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:16:13,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-07 16:16:13,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:16:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:14,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:14,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-07 16:16:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:14,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798760183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:14,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:14,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2024-11-07 16:16:14,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935688790] [2024-11-07 16:16:14,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:14,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-07 16:16:14,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:14,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-07 16:16:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2024-11-07 16:16:14,581 INFO L87 Difference]: Start difference. First operand 210 states and 238 transitions. Second operand has 41 states, 40 states have (on average 4.375) internal successors, (175), 41 states have internal predecessors, (175), 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) [2024-11-07 16:16:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:16:14,965 INFO L93 Difference]: Finished difference Result 267 states and 303 transitions. [2024-11-07 16:16:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 16:16:14,966 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.375) internal successors, (175), 41 states have internal predecessors, (175), 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 71 [2024-11-07 16:16:14,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:16:14,966 INFO L225 Difference]: With dead ends: 267 [2024-11-07 16:16:14,966 INFO L226 Difference]: Without dead ends: 267 [2024-11-07 16:16:14,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=330, Invalid=2022, Unknown=0, NotChecked=0, Total=2352 [2024-11-07 16:16:14,967 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 257 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:16:14,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 710 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:16:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-07 16:16:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 228. [2024-11-07 16:16:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.145374449339207) internal successors, (260), 227 states have internal predecessors, (260), 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) [2024-11-07 16:16:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 260 transitions. [2024-11-07 16:16:14,973 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 260 transitions. Word has length 71 [2024-11-07 16:16:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:16:14,973 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 260 transitions. [2024-11-07 16:16:14,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.375) internal successors, (175), 41 states have internal predecessors, (175), 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) [2024-11-07 16:16:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 260 transitions. [2024-11-07 16:16:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-07 16:16:14,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:16:14,974 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:16:14,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-07 16:16:15,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:15,174 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:16:15,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:16:15,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1916788745, now seen corresponding path program 10 times [2024-11-07 16:16:15,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:16:15,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697431088] [2024-11-07 16:16:15,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:16:15,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:16:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:15,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:16:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697431088] [2024-11-07 16:16:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697431088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:16:15,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994809232] [2024-11-07 16:16:15,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 16:16:15,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:15,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:16:15,758 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:16:15,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-07 16:16:15,884 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 16:16:15,884 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:16:15,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-07 16:16:15,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:16:16,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-07 16:16:31,280 INFO L349 Elim1Store]: treesize reduction 25, result has 49.0 percent of original size [2024-11-07 16:16:31,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 50 [2024-11-07 16:16:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 43 proven. 55 refuted. 43 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:31,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:32,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2024-11-07 16:16:32,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:16:32,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 67 [2024-11-07 16:16:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 96 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:32,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994809232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:32,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:32,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 35, 35] total 79 [2024-11-07 16:16:32,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164484074] [2024-11-07 16:16:32,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:32,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-07 16:16:32,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-07 16:16:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=5523, Unknown=46, NotChecked=0, Total=6162 [2024-11-07 16:16:32,861 INFO L87 Difference]: Start difference. First operand 228 states and 260 transitions. Second operand has 79 states, 79 states have (on average 2.5316455696202533) internal successors, (200), 79 states have internal predecessors, (200), 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) [2024-11-07 16:16:37,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:16:37,901 INFO L93 Difference]: Finished difference Result 410 states and 464 transitions. [2024-11-07 16:16:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-07 16:16:37,902 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.5316455696202533) internal successors, (200), 79 states have internal predecessors, (200), 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 77 [2024-11-07 16:16:37,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:16:37,903 INFO L225 Difference]: With dead ends: 410 [2024-11-07 16:16:37,903 INFO L226 Difference]: Without dead ends: 249 [2024-11-07 16:16:37,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 4544 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=1535, Invalid=12696, Unknown=49, NotChecked=0, Total=14280 [2024-11-07 16:16:37,905 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 197 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-07 16:16:37,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 738 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1844 Invalid, 1 Unknown, 0 Unchecked, 1.7s Time] [2024-11-07 16:16:37,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-07 16:16:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 240. [2024-11-07 16:16:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.1380753138075315) internal successors, (272), 239 states have internal predecessors, (272), 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) [2024-11-07 16:16:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2024-11-07 16:16:37,909 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 77 [2024-11-07 16:16:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:16:37,909 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2024-11-07 16:16:37,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.5316455696202533) internal successors, (200), 79 states have internal predecessors, (200), 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) [2024-11-07 16:16:37,910 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2024-11-07 16:16:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-07 16:16:37,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:16:37,911 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:16:37,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-07 16:16:38,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:38,111 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:16:38,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:16:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash 372078394, now seen corresponding path program 11 times [2024-11-07 16:16:38,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:16:38,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328156432] [2024-11-07 16:16:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:16:38,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:16:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 28 proven. 134 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:38,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:16:38,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328156432] [2024-11-07 16:16:38,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328156432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:16:38,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513710660] [2024-11-07 16:16:38,642 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 16:16:38,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:38,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:16:38,644 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:16:38,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-07 16:16:38,797 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-07 16:16:38,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:16:38,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-07 16:16:38,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:16:38,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 16:16:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 45 proven. 117 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:39,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 45 proven. 117 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513710660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:39,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:39,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 46 [2024-11-07 16:16:39,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988146738] [2024-11-07 16:16:39,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:39,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-07 16:16:39,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:39,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-07 16:16:39,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1858, Unknown=0, NotChecked=0, Total=2162 [2024-11-07 16:16:39,652 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand has 47 states, 46 states have (on average 4.434782608695652) internal successors, (204), 47 states have internal predecessors, (204), 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) [2024-11-07 16:16:40,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:16:40,131 INFO L93 Difference]: Finished difference Result 301 states and 341 transitions. [2024-11-07 16:16:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 16:16:40,131 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 4.434782608695652) internal successors, (204), 47 states have internal predecessors, (204), 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 81 [2024-11-07 16:16:40,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:16:40,132 INFO L225 Difference]: With dead ends: 301 [2024-11-07 16:16:40,132 INFO L226 Difference]: Without dead ends: 301 [2024-11-07 16:16:40,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=2667, Unknown=0, NotChecked=0, Total=3080 [2024-11-07 16:16:40,133 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 198 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:16:40,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 769 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:16:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-07 16:16:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 258. [2024-11-07 16:16:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.1439688715953307) internal successors, (294), 257 states have internal predecessors, (294), 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) [2024-11-07 16:16:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 294 transitions. [2024-11-07 16:16:40,138 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 294 transitions. Word has length 81 [2024-11-07 16:16:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:16:40,138 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 294 transitions. [2024-11-07 16:16:40,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 4.434782608695652) internal successors, (204), 47 states have internal predecessors, (204), 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) [2024-11-07 16:16:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 294 transitions. [2024-11-07 16:16:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-07 16:16:40,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:16:40,139 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:16:40,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-07 16:16:40,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-07 16:16:40,339 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:16:40,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:16:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 659908526, now seen corresponding path program 12 times [2024-11-07 16:16:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:16:40,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568590146] [2024-11-07 16:16:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:16:40,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:16:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:40,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:16:40,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568590146] [2024-11-07 16:16:40,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568590146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:16:40,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538805535] [2024-11-07 16:16:40,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 16:16:40,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:16:40,983 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:16:40,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-07 16:16:41,188 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-07 16:16:41,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:16:41,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-07 16:16:41,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:16:41,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-07 16:16:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:41,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:41,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-07 16:16:41,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-07 16:16:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 174 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:41,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538805535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:41,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 39 [2024-11-07 16:16:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256179674] [2024-11-07 16:16:41,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:41,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-07 16:16:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-07 16:16:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-11-07 16:16:41,605 INFO L87 Difference]: Start difference. First operand 258 states and 294 transitions. Second operand has 39 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 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) [2024-11-07 16:16:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:16:42,438 INFO L93 Difference]: Finished difference Result 452 states and 514 transitions. [2024-11-07 16:16:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-07 16:16:42,439 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 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 87 [2024-11-07 16:16:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:16:42,439 INFO L225 Difference]: With dead ends: 452 [2024-11-07 16:16:42,440 INFO L226 Difference]: Without dead ends: 279 [2024-11-07 16:16:42,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=3396, Unknown=0, NotChecked=0, Total=3660 [2024-11-07 16:16:42,440 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 193 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:16:42,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1163 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 16:16:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-07 16:16:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 270. [2024-11-07 16:16:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.137546468401487) internal successors, (306), 269 states have internal predecessors, (306), 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) [2024-11-07 16:16:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 306 transitions. [2024-11-07 16:16:42,445 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 306 transitions. Word has length 87 [2024-11-07 16:16:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:16:42,445 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 306 transitions. [2024-11-07 16:16:42,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 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) [2024-11-07 16:16:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 306 transitions. [2024-11-07 16:16:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-07 16:16:42,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:16:42,446 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:16:42,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-07 16:16:42,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:42,647 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:16:42,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:16:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2082260785, now seen corresponding path program 13 times [2024-11-07 16:16:42,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:16:42,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896605028] [2024-11-07 16:16:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:16:42,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:16:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 45 proven. 179 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:43,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:16:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896605028] [2024-11-07 16:16:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896605028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:16:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526066880] [2024-11-07 16:16:43,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 16:16:43,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:43,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:16:43,200 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:16:43,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-07 16:16:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:43,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-07 16:16:43,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:16:43,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-07 16:16:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 66 proven. 158 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:43,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 66 proven. 158 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:44,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526066880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:44,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:44,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-11-07 16:16:44,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617419031] [2024-11-07 16:16:44,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:44,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-07 16:16:44,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:44,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-07 16:16:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2340, Unknown=0, NotChecked=0, Total=2652 [2024-11-07 16:16:44,182 INFO L87 Difference]: Start difference. First operand 270 states and 306 transitions. Second operand has 52 states, 51 states have (on average 4.352941176470588) internal successors, (222), 52 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) [2024-11-07 16:16:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:16:44,807 INFO L93 Difference]: Finished difference Result 335 states and 379 transitions. [2024-11-07 16:16:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 16:16:44,808 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.352941176470588) internal successors, (222), 52 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 91 [2024-11-07 16:16:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:16:44,809 INFO L225 Difference]: With dead ends: 335 [2024-11-07 16:16:44,809 INFO L226 Difference]: Without dead ends: 335 [2024-11-07 16:16:44,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=439, Invalid=3343, Unknown=0, NotChecked=0, Total=3782 [2024-11-07 16:16:44,809 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 149 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:16:44,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1064 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:16:44,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-07 16:16:44,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 288. [2024-11-07 16:16:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.1428571428571428) internal successors, (328), 287 states have internal predecessors, (328), 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) [2024-11-07 16:16:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 328 transitions. [2024-11-07 16:16:44,815 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 328 transitions. Word has length 91 [2024-11-07 16:16:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:16:44,816 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 328 transitions. [2024-11-07 16:16:44,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.352941176470588) internal successors, (222), 52 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) [2024-11-07 16:16:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 328 transitions. [2024-11-07 16:16:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-07 16:16:44,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:16:44,819 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:16:44,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-07 16:16:45,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-07 16:16:45,019 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-07 16:16:45,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:16:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash 879796837, now seen corresponding path program 14 times [2024-11-07 16:16:45,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:16:45,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168478328] [2024-11-07 16:16:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:16:45,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:16:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:16:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 29 proven. 238 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:45,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:16:45,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168478328] [2024-11-07 16:16:45,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168478328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:16:45,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308918021] [2024-11-07 16:16:45,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:16:45,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:16:45,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:16:45,727 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:16:45,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-07 16:16:45,883 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:16:45,883 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:16:45,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-07 16:16:45,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:16:45,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 16:16:46,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-07 16:16:46,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:16:46,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-11-07 16:16:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 66 proven. 201 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:46,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:16:47,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-07 16:16:47,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-07 16:16:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 66 proven. 201 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:16:48,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308918021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:16:48,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:16:48,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 71 [2024-11-07 16:16:48,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375823762] [2024-11-07 16:16:48,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:16:48,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-07 16:16:48,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:16:48,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-07 16:16:48,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=4549, Unknown=0, NotChecked=0, Total=4970 [2024-11-07 16:16:48,298 INFO L87 Difference]: Start difference. First operand 288 states and 328 transitions. Second operand has 71 states, 71 states have (on average 3.9859154929577465) internal successors, (283), 71 states have internal predecessors, (283), 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)