./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/memsafety-broom/sll-shared-sll-after.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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', '64bit', '--witnessprinter.graph.data.programhash', 'f1741d130075f1f7f25c8fd49724f342261e16295a533d1b7fc59c9fdd3354e1'] 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/memsafety-broom/sll-shared-sll-after.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash f1741d130075f1f7f25c8fd49724f342261e16295a533d1b7fc59c9fdd3354e1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 16:39:15,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 16:39:15,904 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-07 16:39:15,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 16:39:15,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 16:39:15,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 16:39:15,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 16:39:15,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 16:39:15,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 16:39:15,921 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 16:39:15,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 16:39:15,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 16:39:15,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 16:39:15,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 16:39:15,922 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 16:39:15,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 16:39:15,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 16:39:15,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 16:39:15,922 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 16:39:15,922 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 16:39:15,922 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 16:39:15,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 16:39:15,922 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 16:39:15,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:39:15,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 16:39:15,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 16:39:15,923 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1741d130075f1f7f25c8fd49724f342261e16295a533d1b7fc59c9fdd3354e1 [2024-11-07 16:39:16,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 16:39:16,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 16:39:16,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 16:39:16,148 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 16:39:16,148 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 16:39:16,149 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.i [2024-11-07 16:39:17,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 16:39:17,666 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 16:39:17,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-shared-sll-after.i [2024-11-07 16:39:17,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b57c23bab/8ba578e0db2541bc96bbbd8d399b8196/FLAG91b5bcdd2 [2024-11-07 16:39:17,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b57c23bab/8ba578e0db2541bc96bbbd8d399b8196 [2024-11-07 16:39:17,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 16:39:17,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 16:39:17,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 16:39:17,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 16:39:17,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 16:39:17,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:39:17" (1/1) ... [2024-11-07 16:39:17,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773a9a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:17, skipping insertion in model container [2024-11-07 16:39:17,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:39:17" (1/1) ... [2024-11-07 16:39:18,011 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 16:39:18,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:39:18,217 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 16:39:18,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:39:18,274 INFO L204 MainTranslator]: Completed translation [2024-11-07 16:39:18,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18 WrapperNode [2024-11-07 16:39:18,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 16:39:18,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 16:39:18,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 16:39:18,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 16:39:18,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,308 INFO L138 Inliner]: procedures = 121, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 93 [2024-11-07 16:39:18,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 16:39:18,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 16:39:18,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 16:39:18,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 16:39:18,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,321 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,339 INFO L175 MemorySlicer]: Split 11 memory accesses to 1 slices as follows [11]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 6 writes are split as follows [6]. [2024-11-07 16:39:18,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 16:39:18,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 16:39:18,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 16:39:18,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 16:39:18,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (1/1) ... [2024-11-07 16:39:18,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:39:18,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:18,387 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 16:39:18,390 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 16:39:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero_internal [2024-11-07 16:39:18,407 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero_internal [2024-11-07 16:39:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-07 16:39:18,407 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-07 16:39:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 16:39:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 16:39:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 16:39:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 16:39:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 16:39:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 16:39:18,504 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 16:39:18,507 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 16:39:18,686 INFO L? ?]: Removed 85 outVars from TransFormulas that were not future-live. [2024-11-07 16:39:18,686 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 16:39:18,693 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 16:39:18,693 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-07 16:39:18,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:39:18 BoogieIcfgContainer [2024-11-07 16:39:18,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 16:39:18,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 16:39:18,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 16:39:18,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 16:39:18,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:39:17" (1/3) ... [2024-11-07 16:39:18,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6645d910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:39:18, skipping insertion in model container [2024-11-07 16:39:18,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:39:18" (2/3) ... [2024-11-07 16:39:18,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6645d910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:39:18, skipping insertion in model container [2024-11-07 16:39:18,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:39:18" (3/3) ... [2024-11-07 16:39:18,700 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-shared-sll-after.i [2024-11-07 16:39:18,710 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 16:39:18,710 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2024-11-07 16:39:18,764 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 16:39:18,775 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;@2bcb3d2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 16:39:18,775 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-07 16:39:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 50 states have (on average 1.78) internal successors, (89), 79 states have internal predecessors, (89), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:39:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-07 16:39:18,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:18,786 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 16:39:18,786 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:18,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash 37405005, now seen corresponding path program 1 times [2024-11-07 16:39:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14861867] [2024-11-07 16:39:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:18,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:18,955 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 16:39:18,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:18,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14861867] [2024-11-07 16:39:18,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14861867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:18,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:18,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:39:18,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344909077] [2024-11-07 16:39:18,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:18,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:39:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:18,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:39:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:39:18,980 INFO L87 Difference]: Start difference. First operand has 86 states, 50 states have (on average 1.78) internal successors, (89), 79 states have internal predecessors, (89), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:39:19,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:19,055 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2024-11-07 16:39:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:39:19,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-07 16:39:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:19,061 INFO L225 Difference]: With dead ends: 84 [2024-11-07 16:39:19,061 INFO L226 Difference]: Without dead ends: 82 [2024-11-07 16:39:19,062 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 16:39:19,064 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:19,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 142 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:19,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-07 16:39:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-07 16:39:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 49 states have (on average 1.6326530612244898) internal successors, (80), 75 states have internal predecessors, (80), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:39:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2024-11-07 16:39:19,091 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 5 [2024-11-07 16:39:19,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:19,091 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2024-11-07 16:39:19,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:39:19,091 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2024-11-07 16:39:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-07 16:39:19,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:19,092 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 16:39:19,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 16:39:19,092 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:19,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:19,093 INFO L85 PathProgramCache]: Analyzing trace with hash 37405006, now seen corresponding path program 1 times [2024-11-07 16:39:19,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:19,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618352596] [2024-11-07 16:39:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:19,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:19,174 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 16:39:19,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:19,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618352596] [2024-11-07 16:39:19,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618352596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:19,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:19,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:39:19,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095443253] [2024-11-07 16:39:19,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:19,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:39:19,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:39:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:39:19,178 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:39:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:19,225 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2024-11-07 16:39:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:39:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-07 16:39:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:19,226 INFO L225 Difference]: With dead ends: 80 [2024-11-07 16:39:19,227 INFO L226 Difference]: Without dead ends: 80 [2024-11-07 16:39:19,227 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 16:39:19,228 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:19,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 146 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:39:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-07 16:39:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-07 16:39:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 73 states have internal predecessors, (78), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:39:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2024-11-07 16:39:19,236 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 5 [2024-11-07 16:39:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:19,236 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2024-11-07 16:39:19,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:39:19,236 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2024-11-07 16:39:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:39:19,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:19,238 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 16:39:19,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 16:39:19,238 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_and_zero_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:19,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:19,238 INFO L85 PathProgramCache]: Analyzing trace with hash -602393896, now seen corresponding path program 1 times [2024-11-07 16:39:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:19,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742765252] [2024-11-07 16:39:19,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:19,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:19,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:19,364 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 16:39:19,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:19,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742765252] [2024-11-07 16:39:19,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742765252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:19,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:19,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:39:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029107276] [2024-11-07 16:39:19,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:19,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:39:19,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:39:19,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:39:19,367 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 16:39:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:19,467 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2024-11-07 16:39:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:39:19,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-07 16:39:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:19,468 INFO L225 Difference]: With dead ends: 79 [2024-11-07 16:39:19,468 INFO L226 Difference]: Without dead ends: 79 [2024-11-07 16:39:19,469 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 16:39:19,469 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:19,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 178 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-07 16:39:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-07 16:39:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 72 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:39:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2024-11-07 16:39:19,474 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 17 [2024-11-07 16:39:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:19,475 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2024-11-07 16:39:19,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 16:39:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2024-11-07 16:39:19,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:39:19,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:19,475 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 16:39:19,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 16:39:19,475 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting alloc_and_zero_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:19,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:19,476 INFO L85 PathProgramCache]: Analyzing trace with hash -602393895, now seen corresponding path program 1 times [2024-11-07 16:39:19,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:19,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029437284] [2024-11-07 16:39:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:19,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:19,596 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 16:39:19,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:19,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029437284] [2024-11-07 16:39:19,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029437284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:19,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:19,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:39:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509624040] [2024-11-07 16:39:19,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:19,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:39:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:39:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:39:19,601 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 16:39:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:19,665 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2024-11-07 16:39:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:39:19,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-07 16:39:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:19,666 INFO L225 Difference]: With dead ends: 78 [2024-11-07 16:39:19,667 INFO L226 Difference]: Without dead ends: 78 [2024-11-07 16:39:19,668 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 16:39:19,668 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 1 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:19,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 185 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-07 16:39:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-07 16:39:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 71 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:39:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2024-11-07 16:39:19,676 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 17 [2024-11-07 16:39:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:19,677 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2024-11-07 16:39:19,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-07 16:39:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2024-11-07 16:39:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-07 16:39:19,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:19,678 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:19,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 16:39:19,679 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:19,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:19,679 INFO L85 PathProgramCache]: Analyzing trace with hash -965635815, now seen corresponding path program 1 times [2024-11-07 16:39:19,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:19,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674790721] [2024-11-07 16:39:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:19,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:19,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:19,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:39:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:20,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674790721] [2024-11-07 16:39:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674790721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133914487] [2024-11-07 16:39:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:20,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:20,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:20,010 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 16:39:20,011 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 16:39:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:20,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 16:39:20,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:20,114 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 6 treesize of output 5 [2024-11-07 16:39:20,161 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2024-11-07 16:39:20,202 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-07 16:39:20,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-07 16:39:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-07 16:39:20,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:20,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133914487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:20,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:39:20,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2024-11-07 16:39:20,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128755691] [2024-11-07 16:39:20,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:20,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 16:39:20,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:20,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 16:39:20,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-11-07 16:39:20,263 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 16:39:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:20,456 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2024-11-07 16:39:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:39:20,457 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-11-07 16:39:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:20,457 INFO L225 Difference]: With dead ends: 83 [2024-11-07 16:39:20,457 INFO L226 Difference]: Without dead ends: 83 [2024-11-07 16:39:20,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=124, Unknown=1, NotChecked=22, Total=182 [2024-11-07 16:39:20,458 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 7 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:20,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 301 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 194 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2024-11-07 16:39:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-07 16:39:20,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-07 16:39:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 73 states have internal predecessors, (80), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-07 16:39:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-11-07 16:39:20,462 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 20 [2024-11-07 16:39:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:20,463 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-11-07 16:39:20,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 16:39:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-11-07 16:39:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-07 16:39:20,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:20,463 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:20,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 16:39:20,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:20,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:20,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash -965635814, now seen corresponding path program 1 times [2024-11-07 16:39:20,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:20,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253015830] [2024-11-07 16:39:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:20,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:20,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:39:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:20,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:20,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253015830] [2024-11-07 16:39:20,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253015830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:20,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79039868] [2024-11-07 16:39:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:20,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:20,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:20,953 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 16:39:20,954 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 16:39:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:21,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-07 16:39:21,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:21,020 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 6 treesize of output 5 [2024-11-07 16:39:21,026 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 16:39:21,152 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-07 16:39:21,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:21,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-07 16:39:21,189 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:39:21,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-07 16:39:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-07 16:39:21,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79039868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:21,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:39:21,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-07 16:39:21,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047739646] [2024-11-07 16:39:21,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:21,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 16:39:21,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:21,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 16:39:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=232, Unknown=1, NotChecked=30, Total=306 [2024-11-07 16:39:21,303 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:39:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:21,621 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-11-07 16:39:21,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:39:21,621 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2024-11-07 16:39:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:21,622 INFO L225 Difference]: With dead ends: 85 [2024-11-07 16:39:21,622 INFO L226 Difference]: Without dead ends: 85 [2024-11-07 16:39:21,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=358, Unknown=1, NotChecked=38, Total=462 [2024-11-07 16:39:21,622 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 7 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:21,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 703 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 424 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2024-11-07 16:39:21,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-07 16:39:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-11-07 16:39:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 54 states have (on average 1.5) internal successors, (81), 75 states have internal predecessors, (81), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-07 16:39:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-11-07 16:39:21,627 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 20 [2024-11-07 16:39:21,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:21,627 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-11-07 16:39:21,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:39:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-11-07 16:39:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-07 16:39:21,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:21,628 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 16:39:21,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 16:39:21,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:21,832 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:21,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash -792660588, now seen corresponding path program 1 times [2024-11-07 16:39:21,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:21,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006114268] [2024-11-07 16:39:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:21,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:21,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:21,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:22,042 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 16:39:22,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:22,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006114268] [2024-11-07 16:39:22,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006114268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:22,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:22,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-07 16:39:22,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057942303] [2024-11-07 16:39:22,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:22,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 16:39:22,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:22,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 16:39:22,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-07 16:39:22,045 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:22,321 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2024-11-07 16:39:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:39:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-07 16:39:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:22,322 INFO L225 Difference]: With dead ends: 84 [2024-11-07 16:39:22,322 INFO L226 Difference]: Without dead ends: 84 [2024-11-07 16:39:22,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-07 16:39:22,323 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 35 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:22,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 368 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:39:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-07 16:39:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-07 16:39:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.5) internal successors, (84), 76 states have internal predecessors, (84), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-07 16:39:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2024-11-07 16:39:22,329 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 27 [2024-11-07 16:39:22,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:22,329 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2024-11-07 16:39:22,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2024-11-07 16:39:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-07 16:39:22,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:22,330 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 16:39:22,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 16:39:22,330 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:22,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:22,330 INFO L85 PathProgramCache]: Analyzing trace with hash -792660587, now seen corresponding path program 1 times [2024-11-07 16:39:22,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:22,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47960617] [2024-11-07 16:39:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:22,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:22,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:22,694 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 16:39:22,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:22,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47960617] [2024-11-07 16:39:22,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47960617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:22,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:22,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-07 16:39:22,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57803905] [2024-11-07 16:39:22,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:22,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 16:39:22,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:22,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 16:39:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-07 16:39:22,696 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:22,984 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2024-11-07 16:39:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 16:39:22,984 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-07 16:39:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:22,986 INFO L225 Difference]: With dead ends: 104 [2024-11-07 16:39:22,986 INFO L226 Difference]: Without dead ends: 104 [2024-11-07 16:39:22,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-07 16:39:22,987 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 20 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:22,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 406 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:39:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-07 16:39:22,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2024-11-07 16:39:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 86 states have internal predecessors, (96), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:22,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2024-11-07 16:39:22,991 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 27 [2024-11-07 16:39:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:22,992 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2024-11-07 16:39:22,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2024-11-07 16:39:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-07 16:39:22,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:22,993 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] [2024-11-07 16:39:22,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 16:39:22,993 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:22,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:22,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1537661599, now seen corresponding path program 1 times [2024-11-07 16:39:22,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:22,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184647136] [2024-11-07 16:39:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:22,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:23,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:23,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:23,084 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 16:39:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184647136] [2024-11-07 16:39:23,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184647136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:23,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:23,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 16:39:23,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336288271] [2024-11-07 16:39:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:23,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:39:23,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:23,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:39:23,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:23,085 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:23,169 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2024-11-07 16:39:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:39:23,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-07 16:39:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:23,170 INFO L225 Difference]: With dead ends: 96 [2024-11-07 16:39:23,170 INFO L226 Difference]: Without dead ends: 96 [2024-11-07 16:39:23,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:39:23,170 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 31 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:23,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 547 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-07 16:39:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2024-11-07 16:39:23,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 86 states have internal predecessors, (94), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2024-11-07 16:39:23,174 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 29 [2024-11-07 16:39:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:23,174 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2024-11-07 16:39:23,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2024-11-07 16:39:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-07 16:39:23,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:23,174 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 16:39:23,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 16:39:23,175 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:23,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:23,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1009430428, now seen corresponding path program 1 times [2024-11-07 16:39:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:23,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526734623] [2024-11-07 16:39:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:23,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:23,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:23,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:39:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:23,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:23,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526734623] [2024-11-07 16:39:23,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526734623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:23,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355432665] [2024-11-07 16:39:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:23,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:23,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:23,305 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 16:39:23,306 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 16:39:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:23,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 16:39:23,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:23,378 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 6 treesize of output 5 [2024-11-07 16:39:23,399 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1))) is different from true [2024-11-07 16:39:23,412 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:39:23,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-07 16:39:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-07 16:39:23,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:23,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355432665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:23,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:23,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 11 [2024-11-07 16:39:23,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144777325] [2024-11-07 16:39:23,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:23,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 16:39:23,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:23,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 16:39:23,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2024-11-07 16:39:23,508 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 16:39:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:23,674 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2024-11-07 16:39:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:39:23,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2024-11-07 16:39:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:23,675 INFO L225 Difference]: With dead ends: 100 [2024-11-07 16:39:23,675 INFO L226 Difference]: Without dead ends: 100 [2024-11-07 16:39:23,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=119, Unknown=1, NotChecked=22, Total=182 [2024-11-07 16:39:23,675 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 8 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:23,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 379 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 242 Invalid, 0 Unknown, 86 Unchecked, 0.1s Time] [2024-11-07 16:39:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-07 16:39:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2024-11-07 16:39:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 88 states have internal predecessors, (98), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:39:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2024-11-07 16:39:23,682 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 30 [2024-11-07 16:39:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:23,682 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2024-11-07 16:39:23,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 16:39:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2024-11-07 16:39:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-07 16:39:23,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:23,683 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-07 16:39:23,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 16:39:23,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:23,884 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:23,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1009430427, now seen corresponding path program 1 times [2024-11-07 16:39:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:23,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119043940] [2024-11-07 16:39:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:23,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:24,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:24,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:39:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:24,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119043940] [2024-11-07 16:39:24,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119043940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391565295] [2024-11-07 16:39:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:24,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:24,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:24,108 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 16:39:24,109 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 16:39:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:24,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 16:39:24,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:24,184 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 6 treesize of output 5 [2024-11-07 16:39:24,263 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base 8) |c_#length|)) is different from true [2024-11-07 16:39:24,279 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:39:24,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-07 16:39:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-07 16:39:24,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:24,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391565295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:24,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:24,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-07 16:39:24,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985689216] [2024-11-07 16:39:24,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:24,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 16:39:24,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:24,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 16:39:24,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=198, Unknown=1, NotChecked=28, Total=272 [2024-11-07 16:39:24,445 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:39:24,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:24,613 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2024-11-07 16:39:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:39:24,614 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2024-11-07 16:39:24,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:24,614 INFO L225 Difference]: With dead ends: 101 [2024-11-07 16:39:24,614 INFO L226 Difference]: Without dead ends: 101 [2024-11-07 16:39:24,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=251, Unknown=1, NotChecked=32, Total=342 [2024-11-07 16:39:24,615 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 21 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:24,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 517 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 264 Invalid, 0 Unknown, 86 Unchecked, 0.1s Time] [2024-11-07 16:39:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-07 16:39:24,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-11-07 16:39:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.391304347826087) internal successors, (96), 87 states have internal predecessors, (96), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:39:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2024-11-07 16:39:24,618 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 30 [2024-11-07 16:39:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:24,618 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2024-11-07 16:39:24,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:39:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2024-11-07 16:39:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-07 16:39:24,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:24,619 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-07 16:39:24,631 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 16:39:24,819 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,SelfDestructingSolverStorable10 [2024-11-07 16:39:24,820 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:24,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash -176512424, now seen corresponding path program 1 times [2024-11-07 16:39:24,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:24,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626703996] [2024-11-07 16:39:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:24,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:25,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:25,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:25,525 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 16:39:25,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:25,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626703996] [2024-11-07 16:39:25,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626703996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:25,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030782928] [2024-11-07 16:39:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:25,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:25,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:25,529 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 16:39:25,530 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 16:39:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:25,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-07 16:39:25,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:25,607 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 6 treesize of output 5 [2024-11-07 16:39:25,633 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 16:39:25,636 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 16:39:25,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-07 16:39:25,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-07 16:39:25,928 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#memory_$Pointer$#0.base| (store |c_old(#memory_$Pointer$#0.base)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.base| alloc_and_zero_internal_~pi~1.base))) (= (store |c_old(#memory_$Pointer$#0.offset)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.offset| alloc_and_zero_internal_~pi~1.base)) |c_#memory_$Pointer$#0.offset|))) is different from true [2024-11-07 16:39:25,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:25,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:25,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:25,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:25,962 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:39:25,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-07 16:39:26,058 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-07 16:39:26,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-07 16:39:26,075 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-07 16:39:26,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-07 16:39:26,116 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 16:39:26,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:26,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030782928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:26,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:39:26,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 31 [2024-11-07 16:39:26,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429865443] [2024-11-07 16:39:26,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:26,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 16:39:26,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 16:39:26,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=969, Unknown=1, NotChecked=62, Total=1122 [2024-11-07 16:39:26,417 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand has 31 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 27 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:39:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:27,143 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2024-11-07 16:39:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 16:39:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 27 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-11-07 16:39:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:27,144 INFO L225 Difference]: With dead ends: 102 [2024-11-07 16:39:27,144 INFO L226 Difference]: Without dead ends: 102 [2024-11-07 16:39:27,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=1822, Unknown=3, NotChecked=86, Total=2070 [2024-11-07 16:39:27,146 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 19 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:27,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1032 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 720 Invalid, 0 Unknown, 101 Unchecked, 0.4s Time] [2024-11-07 16:39:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-07 16:39:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2024-11-07 16:39:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 71 states have (on average 1.380281690140845) internal successors, (98), 89 states have internal predecessors, (98), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:39:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2024-11-07 16:39:27,148 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 31 [2024-11-07 16:39:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:27,149 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2024-11-07 16:39:27,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 27 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:39:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2024-11-07 16:39:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:39:27,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:27,149 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:27,165 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 16:39:27,350 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,SelfDestructingSolverStorable11 [2024-11-07 16:39:27,350 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:27,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:27,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1193377673, now seen corresponding path program 1 times [2024-11-07 16:39:27,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:27,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304881410] [2024-11-07 16:39:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:27,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:27,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:27,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:39:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:27,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 16:39:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 16:39:27,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:27,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304881410] [2024-11-07 16:39:27,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304881410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:27,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123330820] [2024-11-07 16:39:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:27,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:27,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:27,527 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 16:39:27,529 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 16:39:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:27,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 16:39:27,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:27,607 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 6 treesize of output 5 [2024-11-07 16:39:27,618 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 15 treesize of output 1 [2024-11-07 16:39:27,622 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 17 treesize of output 9 [2024-11-07 16:39:27,637 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base 1))) is different from true [2024-11-07 16:39:27,653 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:39:27,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-07 16:39:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2024-11-07 16:39:27,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:27,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123330820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:27,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:27,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 13 [2024-11-07 16:39:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938411159] [2024-11-07 16:39:27,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:27,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 16:39:27,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:27,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 16:39:27,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-07 16:39:27,748 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 16:39:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:27,910 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2024-11-07 16:39:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:39:27,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-11-07 16:39:27,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:27,911 INFO L225 Difference]: With dead ends: 98 [2024-11-07 16:39:27,911 INFO L226 Difference]: Without dead ends: 98 [2024-11-07 16:39:27,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=223, Unknown=1, NotChecked=30, Total=306 [2024-11-07 16:39:27,911 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 10 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:27,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 419 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 82 Unchecked, 0.1s Time] [2024-11-07 16:39:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-07 16:39:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-07 16:39:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 71 states have (on average 1.3661971830985915) internal successors, (97), 88 states have internal predecessors, (97), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:39:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2024-11-07 16:39:27,914 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 33 [2024-11-07 16:39:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:27,914 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2024-11-07 16:39:27,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 16:39:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2024-11-07 16:39:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:39:27,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:27,915 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:27,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 16:39:28,115 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,SelfDestructingSolverStorable12 [2024-11-07 16:39:28,116 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:28,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1193377674, now seen corresponding path program 1 times [2024-11-07 16:39:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:28,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918940390] [2024-11-07 16:39:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:28,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:28,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:28,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:39:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:28,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 16:39:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:39:28,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918940390] [2024-11-07 16:39:28,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918940390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707572494] [2024-11-07 16:39:28,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:28,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:28,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:28,349 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 16:39:28,350 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 16:39:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:28,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 16:39:28,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:28,440 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 6 treesize of output 5 [2024-11-07 16:39:28,445 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 16:39:28,508 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 16:39:28,512 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 15 treesize of output 1 [2024-11-07 16:39:28,538 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 26 treesize of output 14 [2024-11-07 16:39:28,612 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-07 16:39:28,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:28,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-07 16:39:28,635 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:39:28,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-07 16:39:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2024-11-07 16:39:28,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:28,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707572494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:28,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:39:28,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2024-11-07 16:39:28,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543814580] [2024-11-07 16:39:28,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:28,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 16:39:28,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:28,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 16:39:28,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=372, Unknown=1, NotChecked=38, Total=462 [2024-11-07 16:39:28,735 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 15 states have internal predecessors, (45), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 16:39:29,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:29,090 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2024-11-07 16:39:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:39:29,090 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 15 states have internal predecessors, (45), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33 [2024-11-07 16:39:29,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:29,091 INFO L225 Difference]: With dead ends: 96 [2024-11-07 16:39:29,091 INFO L226 Difference]: Without dead ends: 96 [2024-11-07 16:39:29,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=715, Unknown=1, NotChecked=54, Total=870 [2024-11-07 16:39:29,091 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 7 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:29,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 853 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 482 Invalid, 0 Unknown, 82 Unchecked, 0.2s Time] [2024-11-07 16:39:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-07 16:39:29,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2024-11-07 16:39:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.3529411764705883) internal successors, (92), 83 states have internal predecessors, (92), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2024-11-07 16:39:29,094 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 33 [2024-11-07 16:39:29,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:29,094 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2024-11-07 16:39:29,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 15 states have internal predecessors, (45), 3 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 16:39:29,094 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2024-11-07 16:39:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:39:29,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:29,095 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, 1, 1] [2024-11-07 16:39:29,107 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 16:39:29,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:29,300 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:29,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:29,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2124762843, now seen corresponding path program 1 times [2024-11-07 16:39:29,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:29,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196202387] [2024-11-07 16:39:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:29,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:29,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:29,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:29,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:29,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196202387] [2024-11-07 16:39:29,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196202387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775904311] [2024-11-07 16:39:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:29,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:29,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:29,382 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 16:39:29,386 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 16:39:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:29,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 16:39:29,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:29,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:29,502 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 16:39:29,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2024-11-07 16:39:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:29,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775904311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:29,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:29,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 6 [2024-11-07 16:39:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751242928] [2024-11-07 16:39:29,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:29,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:39:29,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:39:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:39:29,513 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:39:29,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:29,602 INFO L93 Difference]: Finished difference Result 95 states and 109 transitions. [2024-11-07 16:39:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:39:29,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-11-07 16:39:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:29,603 INFO L225 Difference]: With dead ends: 95 [2024-11-07 16:39:29,603 INFO L226 Difference]: Without dead ends: 95 [2024-11-07 16:39:29,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:39:29,604 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 11 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:29,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 238 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-07 16:39:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-11-07 16:39:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 84 states have internal predecessors, (95), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2024-11-07 16:39:29,608 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 33 [2024-11-07 16:39:29,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:29,608 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2024-11-07 16:39:29,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:39:29,609 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2024-11-07 16:39:29,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:39:29,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:29,610 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, 1, 1] [2024-11-07 16:39:29,624 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 16:39:29,813 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,SelfDestructingSolverStorable14 [2024-11-07 16:39:29,814 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:29,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:29,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2124762842, now seen corresponding path program 1 times [2024-11-07 16:39:29,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812233185] [2024-11-07 16:39:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:29,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:29,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:29,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:29,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812233185] [2024-11-07 16:39:29,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812233185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406047441] [2024-11-07 16:39:29,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:29,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:29,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:29,963 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 16:39:29,964 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 16:39:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:30,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-07 16:39:30,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:30,055 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 16:39:30,056 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 6 treesize of output 5 [2024-11-07 16:39:30,197 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0))) is different from true [2024-11-07 16:39:30,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:30,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-07 16:39:30,216 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:39:30,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-07 16:39:30,246 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 16:39:30,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:39:30,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406047441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:30,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:39:30,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 20 [2024-11-07 16:39:30,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081458217] [2024-11-07 16:39:30,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:30,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 16:39:30,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 16:39:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=331, Unknown=1, NotChecked=36, Total=420 [2024-11-07 16:39:30,247 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:30,402 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2024-11-07 16:39:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:39:30,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2024-11-07 16:39:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:30,403 INFO L225 Difference]: With dead ends: 100 [2024-11-07 16:39:30,403 INFO L226 Difference]: Without dead ends: 100 [2024-11-07 16:39:30,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=331, Unknown=1, NotChecked=36, Total=420 [2024-11-07 16:39:30,403 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 4 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:30,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 318 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 325 Invalid, 0 Unknown, 165 Unchecked, 0.1s Time] [2024-11-07 16:39:30,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-07 16:39:30,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2024-11-07 16:39:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 89 states have internal predecessors, (101), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2024-11-07 16:39:30,406 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 33 [2024-11-07 16:39:30,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:30,406 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2024-11-07 16:39:30,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2024-11-07 16:39:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-07 16:39:30,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:30,407 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, 1, 1, 1, 1] [2024-11-07 16:39:30,420 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 16:39:30,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:30,608 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:30,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:30,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1787670827, now seen corresponding path program 1 times [2024-11-07 16:39:30,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:30,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849469386] [2024-11-07 16:39:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:30,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:30,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:30,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:30,707 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 16:39:30,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:30,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849469386] [2024-11-07 16:39:30,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849469386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:30,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:30,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 16:39:30,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610208778] [2024-11-07 16:39:30,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:30,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:39:30,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:39:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:30,713 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:30,800 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2024-11-07 16:39:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:39:30,801 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-07 16:39:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:30,801 INFO L225 Difference]: With dead ends: 103 [2024-11-07 16:39:30,801 INFO L226 Difference]: Without dead ends: 103 [2024-11-07 16:39:30,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:30,802 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 21 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:30,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 492 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-07 16:39:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2024-11-07 16:39:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 75 states have (on average 1.32) internal successors, (99), 89 states have internal predecessors, (99), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2024-11-07 16:39:30,805 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 35 [2024-11-07 16:39:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:30,805 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2024-11-07 16:39:30,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2024-11-07 16:39:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-07 16:39:30,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:30,806 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, 1, 1, 1, 1, 1] [2024-11-07 16:39:30,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 16:39:30,806 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:30,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:30,806 INFO L85 PathProgramCache]: Analyzing trace with hash 418220223, now seen corresponding path program 1 times [2024-11-07 16:39:30,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:30,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81190430] [2024-11-07 16:39:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:30,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:30,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:30,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:30,927 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 16:39:30,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:30,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81190430] [2024-11-07 16:39:30,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81190430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:30,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:30,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:39:30,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821928703] [2024-11-07 16:39:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:30,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:39:30,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:30,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:39:30,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:30,929 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:31,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:31,051 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2024-11-07 16:39:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:39:31,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-11-07 16:39:31,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:31,052 INFO L225 Difference]: With dead ends: 102 [2024-11-07 16:39:31,052 INFO L226 Difference]: Without dead ends: 102 [2024-11-07 16:39:31,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:31,053 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 17 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:31,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 426 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-07 16:39:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-07 16:39:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 92 states have internal predecessors, (103), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2024-11-07 16:39:31,057 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 36 [2024-11-07 16:39:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:31,057 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2024-11-07 16:39:31,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:39:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2024-11-07 16:39:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-07 16:39:31,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:31,058 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-07 16:39:31,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 16:39:31,058 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:31,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:31,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1008524735, now seen corresponding path program 1 times [2024-11-07 16:39:31,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:31,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408747746] [2024-11-07 16:39:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:31,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:31,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:31,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:31,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:39:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:31,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:31,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408747746] [2024-11-07 16:39:31,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408747746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:31,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346499124] [2024-11-07 16:39:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:31,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:31,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:31,494 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 16:39:31,499 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 16:39:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:31,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-07 16:39:31,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:31,610 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 6 treesize of output 5 [2024-11-07 16:39:31,613 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 16:39:31,870 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:39:31,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-07 16:39:31,885 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-07 16:39:31,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-07 16:39:31,979 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0))) is different from true [2024-11-07 16:39:31,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:31,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-07 16:39:32,003 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-07 16:39:32,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-07 16:39:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-07 16:39:32,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:32,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346499124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:32,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:39:32,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2024-11-07 16:39:32,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784769090] [2024-11-07 16:39:32,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:32,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 16:39:32,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:32,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 16:39:32,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=891, Unknown=1, NotChecked=60, Total=1056 [2024-11-07 16:39:32,204 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand has 30 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 25 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:39:32,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:32,846 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2024-11-07 16:39:32,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 16:39:32,846 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 25 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 39 [2024-11-07 16:39:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:32,847 INFO L225 Difference]: With dead ends: 102 [2024-11-07 16:39:32,847 INFO L226 Difference]: Without dead ends: 102 [2024-11-07 16:39:32,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=1470, Unknown=1, NotChecked=78, Total=1722 [2024-11-07 16:39:32,847 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 70 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:32,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 707 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 825 Invalid, 0 Unknown, 75 Unchecked, 0.4s Time] [2024-11-07 16:39:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-07 16:39:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-07 16:39:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 93 states have internal predecessors, (103), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2024-11-07 16:39:32,850 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 39 [2024-11-07 16:39:32,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:32,850 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2024-11-07 16:39:32,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 25 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:39:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2024-11-07 16:39:32,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-07 16:39:32,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:32,851 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:32,866 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 16:39:33,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:33,051 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:33,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash -501329558, now seen corresponding path program 1 times [2024-11-07 16:39:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:33,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513512082] [2024-11-07 16:39:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:33,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:33,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:33,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:33,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:33,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513512082] [2024-11-07 16:39:33,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513512082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:33,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483970091] [2024-11-07 16:39:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:33,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:33,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:33,208 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 16:39:33,214 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 16:39:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:33,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-07 16:39:33,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:33,406 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 8 treesize of output 1 [2024-11-07 16:39:33,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:33,498 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 15 treesize of output 15 [2024-11-07 16:39:33,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:33,505 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 15 treesize of output 15 [2024-11-07 16:39:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:33,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:33,704 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-07 16:39:33,704 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 24 treesize of output 23 [2024-11-07 16:39:33,737 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 6 treesize of output 4 [2024-11-07 16:39:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483970091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:33,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:33,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 18] total 30 [2024-11-07 16:39:33,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657270243] [2024-11-07 16:39:33,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:33,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 16:39:33,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:33,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 16:39:33,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=802, Unknown=0, NotChecked=0, Total=870 [2024-11-07 16:39:33,857 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 28 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:39:34,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:34,426 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2024-11-07 16:39:34,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 16:39:34,427 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 28 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2024-11-07 16:39:34,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:34,427 INFO L225 Difference]: With dead ends: 114 [2024-11-07 16:39:34,427 INFO L226 Difference]: Without dead ends: 114 [2024-11-07 16:39:34,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2024-11-07 16:39:34,428 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 41 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:34,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1013 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:39:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-07 16:39:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2024-11-07 16:39:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 89 states have (on average 1.303370786516854) internal successors, (116), 103 states have internal predecessors, (116), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2024-11-07 16:39:34,431 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 39 [2024-11-07 16:39:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:34,431 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2024-11-07 16:39:34,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 28 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:39:34,431 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2024-11-07 16:39:34,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 16:39:34,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:34,432 INFO L215 NwaCegarLoop]: trace histogram [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, 1] [2024-11-07 16:39:34,444 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 16:39:34,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:34,632 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:34,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:34,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1076068346, now seen corresponding path program 1 times [2024-11-07 16:39:34,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:34,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037215000] [2024-11-07 16:39:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:34,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:34,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:34,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:39:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:34,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 16:39:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 16:39:34,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:34,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037215000] [2024-11-07 16:39:34,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037215000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:34,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42459622] [2024-11-07 16:39:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:34,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:34,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:34,823 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 16:39:34,828 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 16:39:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:34,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 16:39:34,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:34,930 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 6 treesize of output 5 [2024-11-07 16:39:34,946 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 15 treesize of output 1 [2024-11-07 16:39:34,952 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 17 treesize of output 9 [2024-11-07 16:39:34,981 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1))) is different from true [2024-11-07 16:39:34,998 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:39:34,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-07 16:39:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-07 16:39:35,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:35,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42459622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:35,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:35,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 13 [2024-11-07 16:39:35,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427305182] [2024-11-07 16:39:35,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:35,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 16:39:35,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 16:39:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-07 16:39:35,136 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 16:39:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:35,328 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2024-11-07 16:39:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:39:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2024-11-07 16:39:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:35,332 INFO L225 Difference]: With dead ends: 113 [2024-11-07 16:39:35,333 INFO L226 Difference]: Without dead ends: 113 [2024-11-07 16:39:35,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=223, Unknown=1, NotChecked=30, Total=306 [2024-11-07 16:39:35,334 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 12 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:35,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 408 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 252 Invalid, 0 Unknown, 79 Unchecked, 0.1s Time] [2024-11-07 16:39:35,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-07 16:39:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2024-11-07 16:39:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 102 states have internal predecessors, (115), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2024-11-07 16:39:35,337 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 42 [2024-11-07 16:39:35,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:35,338 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2024-11-07 16:39:35,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 16:39:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2024-11-07 16:39:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 16:39:35,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:35,338 INFO L215 NwaCegarLoop]: trace histogram [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, 1] [2024-11-07 16:39:35,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-07 16:39:35,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:35,543 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:35,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1076068347, now seen corresponding path program 1 times [2024-11-07 16:39:35,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:35,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182137799] [2024-11-07 16:39:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:35,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:35,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:35,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:39:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:35,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 16:39:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:39:35,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:35,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182137799] [2024-11-07 16:39:35,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182137799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:35,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118072562] [2024-11-07 16:39:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:35,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:35,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:35,759 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 16:39:35,762 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 16:39:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:35,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 16:39:35,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:35,868 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 6 treesize of output 5 [2024-11-07 16:39:35,891 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 15 treesize of output 1 [2024-11-07 16:39:35,893 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 16:39:35,912 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 17 treesize of output 9 [2024-11-07 16:39:35,955 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base 8) |c_#length|)) is different from true [2024-11-07 16:39:35,967 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:39:35,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-07 16:39:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-07 16:39:35,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:36,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118072562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:36,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:36,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-11-07 16:39:36,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127989551] [2024-11-07 16:39:36,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:36,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 16:39:36,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:36,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 16:39:36,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=328, Unknown=1, NotChecked=36, Total=420 [2024-11-07 16:39:36,136 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 21 states, 20 states have (on average 2.85) internal successors, (57), 16 states have internal predecessors, (57), 3 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-07 16:39:36,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:36,448 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2024-11-07 16:39:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:39:36,449 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 16 states have internal predecessors, (57), 3 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2024-11-07 16:39:36,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:36,449 INFO L225 Difference]: With dead ends: 114 [2024-11-07 16:39:36,450 INFO L226 Difference]: Without dead ends: 114 [2024-11-07 16:39:36,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=515, Unknown=1, NotChecked=46, Total=650 [2024-11-07 16:39:36,451 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 15 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:36,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 697 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 350 Invalid, 0 Unknown, 80 Unchecked, 0.2s Time] [2024-11-07 16:39:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-07 16:39:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-11-07 16:39:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 86 states have (on average 1.2790697674418605) internal successors, (110), 98 states have internal predecessors, (110), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-07 16:39:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2024-11-07 16:39:36,454 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 42 [2024-11-07 16:39:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:36,454 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2024-11-07 16:39:36,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 16 states have internal predecessors, (57), 3 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-07 16:39:36,454 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2024-11-07 16:39:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 16:39:36,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:36,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:36,467 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 16:39:36,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:36,659 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:36,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:36,659 INFO L85 PathProgramCache]: Analyzing trace with hash -741412390, now seen corresponding path program 1 times [2024-11-07 16:39:36,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:36,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621385283] [2024-11-07 16:39:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:36,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:36,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:36,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:36,934 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 16:39:36,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:36,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621385283] [2024-11-07 16:39:36,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621385283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:36,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052765190] [2024-11-07 16:39:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:36,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:36,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:36,938 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 16:39:36,938 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 16:39:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:37,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-07 16:39:37,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:37,076 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 6 treesize of output 5 [2024-11-07 16:39:37,151 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-07 16:39:37,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-07 16:39:37,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2024-11-07 16:39:37,295 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 16:39:37,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:37,577 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 16:39:37,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052765190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:37,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:37,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 35 [2024-11-07 16:39:37,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064505512] [2024-11-07 16:39:37,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:37,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 16:39:37,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 16:39:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1154, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 16:39:37,580 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 36 states, 33 states have (on average 2.242424242424242) internal successors, (74), 29 states have internal predecessors, (74), 3 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 16:39:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:38,063 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2024-11-07 16:39:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 16:39:38,063 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.242424242424242) internal successors, (74), 29 states have internal predecessors, (74), 3 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2024-11-07 16:39:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:38,064 INFO L225 Difference]: With dead ends: 148 [2024-11-07 16:39:38,065 INFO L226 Difference]: Without dead ends: 148 [2024-11-07 16:39:38,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-11-07 16:39:38,065 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 78 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:38,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 634 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:39:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-07 16:39:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 110. [2024-11-07 16:39:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 91 states have (on average 1.2857142857142858) internal successors, (117), 102 states have internal predecessors, (117), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-07 16:39:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2024-11-07 16:39:38,075 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 41 [2024-11-07 16:39:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:38,075 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2024-11-07 16:39:38,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.242424242424242) internal successors, (74), 29 states have internal predecessors, (74), 3 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 16:39:38,075 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2024-11-07 16:39:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 16:39:38,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:38,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:38,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-07 16:39:38,276 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,SelfDestructingSolverStorable22 [2024-11-07 16:39:38,276 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:38,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash -741412389, now seen corresponding path program 1 times [2024-11-07 16:39:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:38,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629597946] [2024-11-07 16:39:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:38,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:38,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:39:38,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:38,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629597946] [2024-11-07 16:39:38,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629597946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:38,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:38,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:39:38,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602572018] [2024-11-07 16:39:38,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:38,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:39:38,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:38,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:39:38,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:38,409 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:39:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:38,557 INFO L93 Difference]: Finished difference Result 161 states and 191 transitions. [2024-11-07 16:39:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:39:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2024-11-07 16:39:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:38,558 INFO L225 Difference]: With dead ends: 161 [2024-11-07 16:39:38,558 INFO L226 Difference]: Without dead ends: 161 [2024-11-07 16:39:38,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:38,559 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 10 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:38,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 426 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-07 16:39:38,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2024-11-07 16:39:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 134 states have (on average 1.335820895522388) internal successors, (179), 145 states have internal predecessors, (179), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-07 16:39:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 189 transitions. [2024-11-07 16:39:38,562 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 189 transitions. Word has length 41 [2024-11-07 16:39:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:38,562 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 189 transitions. [2024-11-07 16:39:38,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:39:38,562 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 189 transitions. [2024-11-07 16:39:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 16:39:38,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:38,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:38,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 16:39:38,563 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:38,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:38,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1508949027, now seen corresponding path program 1 times [2024-11-07 16:39:38,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:38,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626333704] [2024-11-07 16:39:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:38,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:38,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:39:38,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:38,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626333704] [2024-11-07 16:39:38,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626333704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:38,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:38,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 16:39:38,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388924102] [2024-11-07 16:39:38,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:38,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:39:38,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:39:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:38,642 INFO L87 Difference]: Start difference. First operand 153 states and 189 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:39:38,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:38,715 INFO L93 Difference]: Finished difference Result 160 states and 196 transitions. [2024-11-07 16:39:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:39:38,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2024-11-07 16:39:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:38,717 INFO L225 Difference]: With dead ends: 160 [2024-11-07 16:39:38,718 INFO L226 Difference]: Without dead ends: 160 [2024-11-07 16:39:38,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:38,718 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 18 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:38,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 486 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:38,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-07 16:39:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2024-11-07 16:39:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.3111111111111111) internal successors, (177), 146 states have internal predecessors, (177), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-07 16:39:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 187 transitions. [2024-11-07 16:39:38,725 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 187 transitions. Word has length 42 [2024-11-07 16:39:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:38,726 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 187 transitions. [2024-11-07 16:39:38,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:39:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 187 transitions. [2024-11-07 16:39:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-07 16:39:38,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:38,726 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, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:38,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-07 16:39:38,726 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:38,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:38,727 INFO L85 PathProgramCache]: Analyzing trace with hash 49440130, now seen corresponding path program 1 times [2024-11-07 16:39:38,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:38,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576406129] [2024-11-07 16:39:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:38,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:39,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:39,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:39,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:39:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:39,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:39,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576406129] [2024-11-07 16:39:39,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576406129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:39,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969934176] [2024-11-07 16:39:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:39,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:39,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:39,597 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 16:39:39,599 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 16:39:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:39,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-07 16:39:39,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:39,735 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 6 treesize of output 5 [2024-11-07 16:39:39,770 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 16:39:39,773 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 16:39:39,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-07 16:39:39,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-07 16:39:40,135 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:39:40,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-07 16:39:40,152 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-07 16:39:40,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-07 16:39:40,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:40,273 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#memory_$Pointer$#0.base| (store |c_old(#memory_$Pointer$#0.base)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.base| alloc_and_zero_internal_~pi~1.base))) (= (store |c_old(#memory_$Pointer$#0.offset)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.offset| alloc_and_zero_internal_~pi~1.base)) |c_#memory_$Pointer$#0.offset|))) is different from true [2024-11-07 16:39:40,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:40,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:40,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:40,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:40,302 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:39:40,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 16:39:40,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:40,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:40,435 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-07 16:39:40,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-07 16:39:40,449 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-07 16:39:40,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-07 16:39:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2024-11-07 16:39:40,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:40,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969934176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:40,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:39:40,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 41 [2024-11-07 16:39:40,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597251526] [2024-11-07 16:39:40,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:40,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-07 16:39:40,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:40,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-07 16:39:40,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1749, Unknown=7, NotChecked=84, Total=1980 [2024-11-07 16:39:40,899 INFO L87 Difference]: Start difference. First operand 154 states and 187 transitions. Second operand has 41 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 33 states have internal predecessors, (68), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:39:41,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:41,726 INFO L93 Difference]: Finished difference Result 172 states and 209 transitions. [2024-11-07 16:39:41,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 16:39:41,726 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 33 states have internal predecessors, (68), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2024-11-07 16:39:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:41,729 INFO L225 Difference]: With dead ends: 172 [2024-11-07 16:39:41,729 INFO L226 Difference]: Without dead ends: 172 [2024-11-07 16:39:41,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=240, Invalid=2949, Unknown=7, NotChecked=110, Total=3306 [2024-11-07 16:39:41,730 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 39 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:41,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 958 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 857 Invalid, 0 Unknown, 105 Unchecked, 0.4s Time] [2024-11-07 16:39:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-07 16:39:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2024-11-07 16:39:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 148 states have (on average 1.2905405405405406) internal successors, (191), 159 states have internal predecessors, (191), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-07 16:39:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 203 transitions. [2024-11-07 16:39:41,738 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 203 transitions. Word has length 43 [2024-11-07 16:39:41,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:41,738 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 203 transitions. [2024-11-07 16:39:41,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 33 states have internal predecessors, (68), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:39:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 203 transitions. [2024-11-07 16:39:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 16:39:41,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:41,739 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:41,752 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 16:39:41,943 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,SelfDestructingSolverStorable25 [2024-11-07 16:39:41,943 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:41,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:41,944 INFO L85 PathProgramCache]: Analyzing trace with hash 115494376, now seen corresponding path program 1 times [2024-11-07 16:39:41,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:41,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725193829] [2024-11-07 16:39:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:41,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:42,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:42,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:39:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:42,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 16:39:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:42,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:42,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725193829] [2024-11-07 16:39:42,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725193829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:42,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952806362] [2024-11-07 16:39:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:42,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:42,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:42,380 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 16:39:42,381 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 16:39:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:42,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-07 16:39:42,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:42,580 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 6 treesize of output 5 [2024-11-07 16:39:42,629 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 15 treesize of output 1 [2024-11-07 16:39:42,769 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1)) (= |c_#memory_$Pointer$#0.base| (store |c_old(#memory_$Pointer$#0.base)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.base| alloc_and_zero_internal_~pi~1.base))))) is different from true [2024-11-07 16:39:42,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:42,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-07 16:39:42,801 INFO L349 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2024-11-07 16:39:42,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 41 [2024-11-07 16:39:42,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2024-11-07 16:39:42,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-07 16:39:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:43,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:43,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952806362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:43,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:39:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 35 [2024-11-07 16:39:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273580021] [2024-11-07 16:39:43,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:43,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 16:39:43,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:43,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 16:39:43,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1298, Unknown=1, NotChecked=72, Total=1482 [2024-11-07 16:39:43,145 INFO L87 Difference]: Start difference. First operand 168 states and 203 transitions. Second operand has 36 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 30 states have internal predecessors, (71), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:39:43,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:43,840 INFO L93 Difference]: Finished difference Result 193 states and 237 transitions. [2024-11-07 16:39:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 16:39:43,841 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 30 states have internal predecessors, (71), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 44 [2024-11-07 16:39:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:43,842 INFO L225 Difference]: With dead ends: 193 [2024-11-07 16:39:43,842 INFO L226 Difference]: Without dead ends: 193 [2024-11-07 16:39:43,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=2170, Unknown=1, NotChecked=94, Total=2450 [2024-11-07 16:39:43,842 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 18 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:43,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1270 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 973 Invalid, 0 Unknown, 108 Unchecked, 0.4s Time] [2024-11-07 16:39:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-07 16:39:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2024-11-07 16:39:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 167 states have (on average 1.281437125748503) internal successors, (214), 178 states have internal predecessors, (214), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 16:39:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 230 transitions. [2024-11-07 16:39:43,846 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 230 transitions. Word has length 44 [2024-11-07 16:39:43,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:43,846 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 230 transitions. [2024-11-07 16:39:43,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 30 states have internal predecessors, (71), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:39:43,846 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 230 transitions. [2024-11-07 16:39:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 16:39:43,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:43,846 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:43,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-07 16:39:44,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:44,051 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:44,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash 115494377, now seen corresponding path program 1 times [2024-11-07 16:39:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:44,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154713802] [2024-11-07 16:39:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:44,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:44,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:39:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:44,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 16:39:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:44,697 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 16:39:44,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:44,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154713802] [2024-11-07 16:39:44,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154713802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:44,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684135667] [2024-11-07 16:39:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:44,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:44,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:44,700 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 16:39:44,702 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 16:39:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:44,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-07 16:39:44,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:44,909 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 16:39:44,911 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 6 treesize of output 5 [2024-11-07 16:39:45,002 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 15 treesize of output 1 [2024-11-07 16:39:45,010 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 16:39:45,154 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#memory_$Pointer$#0.base| (store |c_old(#memory_$Pointer$#0.base)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.base| alloc_and_zero_internal_~pi~1.base))) (= (store |c_old(#memory_$Pointer$#0.offset)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.offset| alloc_and_zero_internal_~pi~1.base)) |c_#memory_$Pointer$#0.offset|))) is different from true [2024-11-07 16:39:45,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:45,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2024-11-07 16:39:45,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:45,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-07 16:39:45,194 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-11-07 16:39:45,195 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 20 treesize of output 22 [2024-11-07 16:39:45,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:45,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-07 16:39:45,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-07 16:39:45,281 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 17 treesize of output 9 [2024-11-07 16:39:45,332 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 16:39:45,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:45,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684135667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:45,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:39:45,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 36 [2024-11-07 16:39:45,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658619617] [2024-11-07 16:39:45,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:45,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-07 16:39:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:45,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-07 16:39:45,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1512, Unknown=1, NotChecked=78, Total=1722 [2024-11-07 16:39:45,603 INFO L87 Difference]: Start difference. First operand 189 states and 230 transitions. Second operand has 37 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 32 states have internal predecessors, (73), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:39:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:50,240 INFO L93 Difference]: Finished difference Result 192 states and 234 transitions. [2024-11-07 16:39:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 16:39:50,241 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 32 states have internal predecessors, (73), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 44 [2024-11-07 16:39:50,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:50,242 INFO L225 Difference]: With dead ends: 192 [2024-11-07 16:39:50,242 INFO L226 Difference]: Without dead ends: 192 [2024-11-07 16:39:50,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=158, Invalid=1824, Unknown=2, NotChecked=86, Total=2070 [2024-11-07 16:39:50,243 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 10 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:50,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1079 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 752 Invalid, 0 Unknown, 105 Unchecked, 0.4s Time] [2024-11-07 16:39:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-07 16:39:50,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2024-11-07 16:39:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 168 states have (on average 1.2738095238095237) internal successors, (214), 179 states have internal predecessors, (214), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 16:39:50,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 230 transitions. [2024-11-07 16:39:50,246 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 230 transitions. Word has length 44 [2024-11-07 16:39:50,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:50,246 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 230 transitions. [2024-11-07 16:39:50,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 32 states have internal predecessors, (73), 5 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:39:50,247 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 230 transitions. [2024-11-07 16:39:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 16:39:50,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:50,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:50,259 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 16:39:50,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-07 16:39:50,448 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:50,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:50,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1600383265, now seen corresponding path program 1 times [2024-11-07 16:39:50,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:50,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262345096] [2024-11-07 16:39:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:50,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:50,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:50,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:39:50,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:50,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262345096] [2024-11-07 16:39:50,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262345096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:39:50,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:39:50,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:39:50,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072045746] [2024-11-07 16:39:50,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:39:50,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:39:50,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:50,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:39:50,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:50,541 INFO L87 Difference]: Start difference. First operand 190 states and 230 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:39:50,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:50,640 INFO L93 Difference]: Finished difference Result 195 states and 237 transitions. [2024-11-07 16:39:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:39:50,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2024-11-07 16:39:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:50,641 INFO L225 Difference]: With dead ends: 195 [2024-11-07 16:39:50,641 INFO L226 Difference]: Without dead ends: 195 [2024-11-07 16:39:50,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:39:50,642 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 14 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:50,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 444 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:39:50,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-07 16:39:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2024-11-07 16:39:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 172 states have (on average 1.2848837209302326) internal successors, (221), 183 states have internal predecessors, (221), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 16:39:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 237 transitions. [2024-11-07 16:39:50,645 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 237 transitions. Word has length 44 [2024-11-07 16:39:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:50,645 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 237 transitions. [2024-11-07 16:39:50,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:39:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 237 transitions. [2024-11-07 16:39:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-07 16:39:50,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:50,646 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:50,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-07 16:39:50,646 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:50,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash 267276752, now seen corresponding path program 1 times [2024-11-07 16:39:50,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:50,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138008081] [2024-11-07 16:39:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:50,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:50,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:50,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:50,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:39:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:39:50,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:50,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138008081] [2024-11-07 16:39:50,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138008081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:50,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795608269] [2024-11-07 16:39:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:50,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:50,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:50,814 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 16:39:50,815 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 16:39:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:50,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 16:39:50,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:39:51,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:51,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:51,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 23 [2024-11-07 16:39:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:39:51,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795608269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:51,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:51,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2024-11-07 16:39:51,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672539661] [2024-11-07 16:39:51,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:51,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 16:39:51,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:51,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 16:39:51,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-07 16:39:51,242 INFO L87 Difference]: Start difference. First operand 194 states and 237 transitions. Second operand has 25 states, 24 states have (on average 3.0) internal successors, (72), 22 states have internal predecessors, (72), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:39:51,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:51,409 INFO L93 Difference]: Finished difference Result 194 states and 229 transitions. [2024-11-07 16:39:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 16:39:51,409 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.0) internal successors, (72), 22 states have internal predecessors, (72), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2024-11-07 16:39:51,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:51,410 INFO L225 Difference]: With dead ends: 194 [2024-11-07 16:39:51,410 INFO L226 Difference]: Without dead ends: 194 [2024-11-07 16:39:51,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-07 16:39:51,411 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 30 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:51,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 733 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:39:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-07 16:39:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 189. [2024-11-07 16:39:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 167 states have (on average 1.2455089820359282) internal successors, (208), 178 states have internal predecessors, (208), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 16:39:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 224 transitions. [2024-11-07 16:39:51,414 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 224 transitions. Word has length 45 [2024-11-07 16:39:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:51,414 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 224 transitions. [2024-11-07 16:39:51,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.0) internal successors, (72), 22 states have internal predecessors, (72), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:39:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 224 transitions. [2024-11-07 16:39:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-07 16:39:51,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:51,415 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:51,429 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 16:39:51,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:51,619 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:51,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:51,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1413949697, now seen corresponding path program 1 times [2024-11-07 16:39:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:51,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354324333] [2024-11-07 16:39:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:51,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:51,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:52,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:39:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:52,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354324333] [2024-11-07 16:39:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354324333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:52,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034531810] [2024-11-07 16:39:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:52,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:52,162 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 16:39:52,164 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 16:39:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:52,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-07 16:39:52,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:52,310 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 6 treesize of output 5 [2024-11-07 16:39:52,487 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 16:39:52,489 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 16:39:52,548 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:39:52,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-07 16:39:52,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:52,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:39:52,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:52,823 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 15 treesize of output 15 [2024-11-07 16:39:52,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:52,829 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 15 treesize of output 15 [2024-11-07 16:39:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:52,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:53,035 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1873 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_set_~x#1.base| v_ArrVal_1873) |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0)) (forall ((v_ArrVal_1872 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_set_~x#1.base| v_ArrVal_1872) |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0))) is different from false [2024-11-07 16:39:53,042 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1872 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_~l~0#1.base| v_ArrVal_1872) |c_ULTIMATE.start_create_internal_#res#1.base|) 0) 0)) (forall ((v_ArrVal_1873 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~l~0#1.base| v_ArrVal_1873) |c_ULTIMATE.start_create_internal_#res#1.base|) 0) 0))) is different from false [2024-11-07 16:39:53,048 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1873 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~l~0#1.base| v_ArrVal_1873) |c_ULTIMATE.start_create_internal_~sll~0#1.base|) 0) 0)) (forall ((v_ArrVal_1872 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_~l~0#1.base| v_ArrVal_1872) |c_ULTIMATE.start_create_internal_~sll~0#1.base|) 0) 0))) is different from false [2024-11-07 16:39:53,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:53,164 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2024-11-07 16:39:53,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:53,170 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-07 16:39:53,178 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 42 treesize of output 34 [2024-11-07 16:39:53,180 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 42 treesize of output 34 [2024-11-07 16:39:53,183 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 19 [2024-11-07 16:39:53,184 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 19 treesize of output 17 [2024-11-07 16:39:53,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:53,513 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-07 16:39:53,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:53,518 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 30 treesize of output 30 [2024-11-07 16:39:53,520 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 9 treesize of output 7 [2024-11-07 16:39:53,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:39:53,531 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-07 16:39:53,533 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 16:39:53,537 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 16:39:53,537 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 16 treesize of output 11 [2024-11-07 16:39:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-07 16:39:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034531810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:39:53,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:39:53,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 22] total 59 [2024-11-07 16:39:53,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928384500] [2024-11-07 16:39:53,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:53,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-07 16:39:53,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:53,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-07 16:39:53,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2880, Unknown=55, NotChecked=330, Total=3422 [2024-11-07 16:39:53,808 INFO L87 Difference]: Start difference. First operand 189 states and 224 transitions. Second operand has 59 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 50 states have internal predecessors, (108), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:39:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:55,223 INFO L93 Difference]: Finished difference Result 204 states and 237 transitions. [2024-11-07 16:39:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-07 16:39:55,223 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 50 states have internal predecessors, (108), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 47 [2024-11-07 16:39:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:55,224 INFO L225 Difference]: With dead ends: 204 [2024-11-07 16:39:55,224 INFO L226 Difference]: Without dead ends: 204 [2024-11-07 16:39:55,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=305, Invalid=5348, Unknown=59, NotChecked=450, Total=6162 [2024-11-07 16:39:55,226 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 78 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:55,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1501 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1624 Invalid, 0 Unknown, 271 Unchecked, 0.7s Time] [2024-11-07 16:39:55,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-07 16:39:55,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 197. [2024-11-07 16:39:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 175 states have (on average 1.2342857142857142) internal successors, (216), 186 states have internal predecessors, (216), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 16:39:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 232 transitions. [2024-11-07 16:39:55,234 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 232 transitions. Word has length 47 [2024-11-07 16:39:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:55,234 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 232 transitions. [2024-11-07 16:39:55,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 50 states have internal predecessors, (108), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:39:55,235 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 232 transitions. [2024-11-07 16:39:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:39:55,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:55,235 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:55,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-07 16:39:55,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:55,441 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:39:55,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:39:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash 265269420, now seen corresponding path program 2 times [2024-11-07 16:39:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:39:55,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026580668] [2024-11-07 16:39:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:39:55,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:39:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:56,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:39:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:56,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:39:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:56,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 16:39:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:39:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:39:56,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:39:56,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026580668] [2024-11-07 16:39:56,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026580668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:56,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966917274] [2024-11-07 16:39:56,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:39:56,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:39:56,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:39:56,434 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 16:39:56,435 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 16:39:56,573 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:39:56,573 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:39:56,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-07 16:39:56,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:39:56,586 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 6 treesize of output 5 [2024-11-07 16:39:56,757 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 16:39:56,762 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 16:39:56,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-07 16:39:56,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-07 16:39:56,894 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-07 16:39:56,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-07 16:39:56,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-07 16:39:56,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-07 16:39:57,198 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#memory_$Pointer$#0.base| (store |c_old(#memory_$Pointer$#0.base)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.base| alloc_and_zero_internal_~pi~1.base))) (= (store |c_old(#memory_$Pointer$#0.offset)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.offset| alloc_and_zero_internal_~pi~1.base)) |c_#memory_$Pointer$#0.offset|))) is different from true [2024-11-07 16:39:57,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:39:57,221 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-07 16:39:57,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 43 [2024-11-07 16:39:57,235 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2024-11-07 16:39:57,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-07 16:39:57,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-07 16:39:57,369 INFO L349 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2024-11-07 16:39:57,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 32 [2024-11-07 16:39:57,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2024-11-07 16:39:57,544 INFO L349 Elim1Store]: treesize reduction 70, result has 23.1 percent of original size [2024-11-07 16:39:57,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 41 [2024-11-07 16:39:57,558 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-07 16:39:57,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 30 [2024-11-07 16:39:57,633 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 16:39:57,639 INFO L349 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2024-11-07 16:39:57,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 31 [2024-11-07 16:39:57,646 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 16:39:57,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 16 [2024-11-07 16:39:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:39:57,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:39:58,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966917274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:39:58,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:39:58,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 45 [2024-11-07 16:39:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105653953] [2024-11-07 16:39:58,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:39:58,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-07 16:39:58,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:39:58,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-07 16:39:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2208, Unknown=1, NotChecked=94, Total=2450 [2024-11-07 16:39:58,298 INFO L87 Difference]: Start difference. First operand 197 states and 232 transitions. Second operand has 45 states, 43 states have (on average 1.8372093023255813) internal successors, (79), 38 states have internal predecessors, (79), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:39:59,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:39:59,870 INFO L93 Difference]: Finished difference Result 201 states and 238 transitions. [2024-11-07 16:39:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 16:39:59,870 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.8372093023255813) internal successors, (79), 38 states have internal predecessors, (79), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 48 [2024-11-07 16:39:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:39:59,871 INFO L225 Difference]: With dead ends: 201 [2024-11-07 16:39:59,871 INFO L226 Difference]: Without dead ends: 201 [2024-11-07 16:39:59,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=246, Invalid=3917, Unknown=1, NotChecked=126, Total=4290 [2024-11-07 16:39:59,872 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 13 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 16:39:59,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1876 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1540 Invalid, 0 Unknown, 107 Unchecked, 0.8s Time] [2024-11-07 16:39:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-07 16:39:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-07 16:39:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 177 states have (on average 1.231638418079096) internal successors, (218), 188 states have internal predecessors, (218), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 16:39:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 234 transitions. [2024-11-07 16:39:59,877 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 234 transitions. Word has length 48 [2024-11-07 16:39:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:39:59,877 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 234 transitions. [2024-11-07 16:39:59,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.8372093023255813) internal successors, (79), 38 states have internal predecessors, (79), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:39:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 234 transitions. [2024-11-07 16:39:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:39:59,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:39:59,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:39:59,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-07 16:40:00,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:00,079 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:40:00,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:00,079 INFO L85 PathProgramCache]: Analyzing trace with hash -882769064, now seen corresponding path program 1 times [2024-11-07 16:40:00,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:00,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646584770] [2024-11-07 16:40:00,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:00,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:00,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:00,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:40:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:00,603 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 16:40:00,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:00,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646584770] [2024-11-07 16:40:00,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646584770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54489709] [2024-11-07 16:40:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:00,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:00,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:00,606 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 16:40:00,607 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 16:40:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:00,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-07 16:40:00,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:01,403 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 16:40:01,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:01,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54489709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:01,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:01,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 34 [2024-11-07 16:40:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80309399] [2024-11-07 16:40:01,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:01,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-07 16:40:01,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-07 16:40:01,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2024-11-07 16:40:01,759 INFO L87 Difference]: Start difference. First operand 199 states and 234 transitions. Second operand has 35 states, 32 states have (on average 2.59375) internal successors, (83), 29 states have internal predecessors, (83), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:40:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:02,322 INFO L93 Difference]: Finished difference Result 217 states and 251 transitions. [2024-11-07 16:40:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 16:40:02,322 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 2.59375) internal successors, (83), 29 states have internal predecessors, (83), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2024-11-07 16:40:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:02,323 INFO L225 Difference]: With dead ends: 217 [2024-11-07 16:40:02,323 INFO L226 Difference]: Without dead ends: 192 [2024-11-07 16:40:02,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2024-11-07 16:40:02,324 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 3 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:02,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 750 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 16:40:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-07 16:40:02,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-11-07 16:40:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 170 states have (on average 1.2352941176470589) internal successors, (210), 181 states have internal predecessors, (210), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-07 16:40:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 226 transitions. [2024-11-07 16:40:02,330 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 226 transitions. Word has length 48 [2024-11-07 16:40:02,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:02,330 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 226 transitions. [2024-11-07 16:40:02,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 2.59375) internal successors, (83), 29 states have internal predecessors, (83), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:40:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 226 transitions. [2024-11-07 16:40:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-07 16:40:02,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:02,331 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:02,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-07 16:40:02,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-07 16:40:02,532 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:40:02,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:02,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1513375877, now seen corresponding path program 1 times [2024-11-07 16:40:02,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:02,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44438308] [2024-11-07 16:40:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:02,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:02,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:02,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:40:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:02,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:40:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:02,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:40:02,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:02,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44438308] [2024-11-07 16:40:02,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44438308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:02,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351573840] [2024-11-07 16:40:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:02,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:02,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:02,703 INFO L229 MonitoredProcess]: Starting monitored process 23 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 16:40:02,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-07 16:40:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:02,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 16:40:02,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:40:02,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:03,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:03,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 23 [2024-11-07 16:40:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:40:03,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351573840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:03,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:03,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 17 [2024-11-07 16:40:03,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277218219] [2024-11-07 16:40:03,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:03,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 16:40:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:03,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 16:40:03,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:40:03,103 INFO L87 Difference]: Start difference. First operand 192 states and 226 transitions. Second operand has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:40:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:03,272 INFO L93 Difference]: Finished difference Result 248 states and 290 transitions. [2024-11-07 16:40:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 16:40:03,272 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 53 [2024-11-07 16:40:03,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:03,273 INFO L225 Difference]: With dead ends: 248 [2024-11-07 16:40:03,273 INFO L226 Difference]: Without dead ends: 248 [2024-11-07 16:40:03,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:40:03,274 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 22 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:03,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 671 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:40:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-07 16:40:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 214. [2024-11-07 16:40:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 191 states have (on average 1.219895287958115) internal successors, (233), 202 states have internal predecessors, (233), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-07 16:40:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 251 transitions. [2024-11-07 16:40:03,278 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 251 transitions. Word has length 53 [2024-11-07 16:40:03,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:03,279 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 251 transitions. [2024-11-07 16:40:03,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:40:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 251 transitions. [2024-11-07 16:40:03,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-07 16:40:03,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:03,279 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-11-07 16:40:03,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-07 16:40:03,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-07 16:40:03,480 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-07 16:40:03,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:03,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2057520724, now seen corresponding path program 2 times [2024-11-07 16:40:03,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:03,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099929022] [2024-11-07 16:40:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:03,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:04,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:04,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-07 16:40:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:04,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:40:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:04,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 16:40:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:40:04,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099929022] [2024-11-07 16:40:04,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099929022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497094662] [2024-11-07 16:40:04,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:40:04,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:04,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:04,749 INFO L229 MonitoredProcess]: Starting monitored process 24 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 16:40:04,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-07 16:40:04,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:40:04,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:40:04,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-07 16:40:04,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:04,929 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 6 treesize of output 5 [2024-11-07 16:40:04,961 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 16:40:04,966 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 16:40:04,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-07 16:40:04,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-07 16:40:05,292 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:05,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-07 16:40:09,297 WARN L851 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_create_internal_#t~ret5#1.base| |c_ULTIMATE.start_main_~l~0#1.base|)) (or (= (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~l~0#1.base|) 0) 0) (exists ((|v_#memory_$Pointer$#0.base_BEFORE_CALL_14| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_$Pointer$#0.base_BEFORE_CALL_14| |c_#memory_$Pointer$#0.base|))) (and (= |c_ULTIMATE.start_create_internal_#t~ret5#1.base| .cse0) (= (select (select |v_#memory_$Pointer$#0.base_BEFORE_CALL_14| |c_ULTIMATE.start_main_~l~0#1.base|) 0) 0) (= |c_#memory_$Pointer$#0.base| (store |v_#memory_$Pointer$#0.base_BEFORE_CALL_14| .cse0 (select |c_#memory_$Pointer$#0.base| .cse0))))))) (or (exists ((|v_#memory_$Pointer$#0.offset_BEFORE_CALL_12| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$#0.offset_BEFORE_CALL_12| |c_#memory_$Pointer$#0.offset|))) (and (= (select (select |v_#memory_$Pointer$#0.offset_BEFORE_CALL_12| |c_ULTIMATE.start_main_~l~0#1.base|) 0) 0) (= .cse1 |c_ULTIMATE.start_create_internal_#t~ret5#1.base|) (= (store |v_#memory_$Pointer$#0.offset_BEFORE_CALL_12| .cse1 (select |c_#memory_$Pointer$#0.offset| .cse1)) |c_#memory_$Pointer$#0.offset|)))) (= (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_~l~0#1.base|) 0) 0)) (= |c_ULTIMATE.start_main_~l~0#1.offset| 0)) is different from false [2024-11-07 16:40:09,300 WARN L873 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_create_internal_#t~ret5#1.base| |c_ULTIMATE.start_main_~l~0#1.base|)) (or (= (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~l~0#1.base|) 0) 0) (exists ((|v_#memory_$Pointer$#0.base_BEFORE_CALL_14| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_$Pointer$#0.base_BEFORE_CALL_14| |c_#memory_$Pointer$#0.base|))) (and (= |c_ULTIMATE.start_create_internal_#t~ret5#1.base| .cse0) (= (select (select |v_#memory_$Pointer$#0.base_BEFORE_CALL_14| |c_ULTIMATE.start_main_~l~0#1.base|) 0) 0) (= |c_#memory_$Pointer$#0.base| (store |v_#memory_$Pointer$#0.base_BEFORE_CALL_14| .cse0 (select |c_#memory_$Pointer$#0.base| .cse0))))))) (or (exists ((|v_#memory_$Pointer$#0.offset_BEFORE_CALL_12| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_$Pointer$#0.offset_BEFORE_CALL_12| |c_#memory_$Pointer$#0.offset|))) (and (= (select (select |v_#memory_$Pointer$#0.offset_BEFORE_CALL_12| |c_ULTIMATE.start_main_~l~0#1.base|) 0) 0) (= .cse1 |c_ULTIMATE.start_create_internal_#t~ret5#1.base|) (= (store |v_#memory_$Pointer$#0.offset_BEFORE_CALL_12| .cse1 (select |c_#memory_$Pointer$#0.offset| .cse1)) |c_#memory_$Pointer$#0.offset|)))) (= (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_~l~0#1.base|) 0) 0)) (= |c_ULTIMATE.start_main_~l~0#1.offset| 0)) is different from true [2024-11-07 16:40:09,512 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:40:09,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-07 16:40:09,529 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:40:09,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-07 16:40:09,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-07 16:40:09,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2024-11-07 16:40:10,002 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 6 treesize of output 5 [2024-11-07 16:40:10,281 INFO L349 Elim1Store]: treesize reduction 60, result has 68.3 percent of original size [2024-11-07 16:40:10,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 100 treesize of output 200 [2024-11-07 16:40:10,402 INFO L349 Elim1Store]: treesize reduction 60, result has 68.3 percent of original size [2024-11-07 16:40:10,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 184