./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-shared-sll-before.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-before.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', '3d5c47b12a731095d5a51b5ad7e19fee7b2131bbe4b3910b3108642fe52c085d'] 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-before.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 3d5c47b12a731095d5a51b5ad7e19fee7b2131bbe4b3910b3108642fe52c085d --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 16:40:07,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 16:40:07,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-07 16:40:07,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 16:40:07,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 16:40:07,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 16:40:07,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 16:40:07,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 16:40:07,282 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 16:40:07,282 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 16:40:07,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 16:40:07,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 16:40:07,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 16:40:07,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 16:40:07,284 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 16:40:07,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 16:40:07,284 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 16:40:07,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 16:40:07,284 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 16:40:07,285 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 16:40:07,285 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 16:40:07,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 16:40:07,285 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 16:40:07,285 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 16:40:07,285 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 16:40:07,286 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 16:40:07,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 16:40:07,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 16:40:07,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 16:40:07,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 16:40:07,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:40:07,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 16:40:07,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 16:40:07,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 16:40:07,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 16:40:07,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 16:40:07,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 16:40:07,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 16:40:07,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 16:40:07,288 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 -> 3d5c47b12a731095d5a51b5ad7e19fee7b2131bbe4b3910b3108642fe52c085d [2024-11-07 16:40:07,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 16:40:07,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 16:40:07,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 16:40:07,589 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 16:40:07,589 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 16:40:07,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-shared-sll-before.i [2024-11-07 16:40:08,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 16:40:09,277 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 16:40:09,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-shared-sll-before.i [2024-11-07 16:40:09,304 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fa81a10a2/8d91c2e215b5461f9964721c20c487b7/FLAG25e249679 [2024-11-07 16:40:09,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fa81a10a2/8d91c2e215b5461f9964721c20c487b7 [2024-11-07 16:40:09,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 16:40:09,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 16:40:09,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 16:40:09,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 16:40:09,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 16:40:09,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70817d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09, skipping insertion in model container [2024-11-07 16:40:09,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,381 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 16:40:09,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:40:09,609 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 16:40:09,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:40:09,682 INFO L204 MainTranslator]: Completed translation [2024-11-07 16:40:09,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09 WrapperNode [2024-11-07 16:40:09,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 16:40:09,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 16:40:09,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 16:40:09,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 16:40:09,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,732 INFO L138 Inliner]: procedures = 120, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 87 [2024-11-07 16:40:09,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 16:40:09,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 16:40:09,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 16:40:09,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 16:40:09,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,777 INFO L175 MemorySlicer]: Split 12 memory accesses to 1 slices as follows [12]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 7 writes are split as follows [7]. [2024-11-07 16:40:09,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 16:40:09,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 16:40:09,806 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 16:40:09,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 16:40:09,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (1/1) ... [2024-11-07 16:40:09,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:40:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:09,846 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 16:40:09,851 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 16:40:09,875 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero_internal [2024-11-07 16:40:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero_internal [2024-11-07 16:40:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-07 16:40:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-07 16:40:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 16:40:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 16:40:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 16:40:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 16:40:09,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 16:40:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 16:40:09,992 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 16:40:09,994 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 16:40:10,260 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-07 16:40:10,260 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 16:40:10,273 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 16:40:10,274 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 16:40:10,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:40:10 BoogieIcfgContainer [2024-11-07 16:40:10,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 16:40:10,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 16:40:10,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 16:40:10,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 16:40:10,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:40:09" (1/3) ... [2024-11-07 16:40:10,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769c6a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:40:10, skipping insertion in model container [2024-11-07 16:40:10,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:09" (2/3) ... [2024-11-07 16:40:10,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769c6a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:40:10, skipping insertion in model container [2024-11-07 16:40:10,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:40:10" (3/3) ... [2024-11-07 16:40:10,284 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-shared-sll-before.i [2024-11-07 16:40:10,294 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 16:40:10,294 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-11-07 16:40:10,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 16:40:10,341 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;@ee3f46b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 16:40:10,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-07 16:40:10,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 80 states have internal predecessors, (88), 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 16:40:10,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-07 16:40:10,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:10,351 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 16:40:10,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zero_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:10,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash 37399427, now seen corresponding path program 1 times [2024-11-07 16:40:10,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:10,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301376264] [2024-11-07 16:40:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:10,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:10,506 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 16:40:10,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:10,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301376264] [2024-11-07 16:40:10,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301376264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:10,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:10,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:40:10,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874089904] [2024-11-07 16:40:10,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:10,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:40:10,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:40:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:40:10,545 INFO L87 Difference]: Start difference. First operand has 87 states, 49 states have (on average 1.7959183673469388) internal successors, (88), 80 states have internal predecessors, (88), 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 16:40:10,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:10,630 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2024-11-07 16:40:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:40:10,634 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 16:40:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:10,641 INFO L225 Difference]: With dead ends: 86 [2024-11-07 16:40:10,641 INFO L226 Difference]: Without dead ends: 84 [2024-11-07 16:40:10,643 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 16:40:10,646 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 1 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:10,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 144 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:10,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-07 16:40:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-07 16:40:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.6875) internal successors, (81), 77 states have internal predecessors, (81), 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 16:40:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2024-11-07 16:40:10,683 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 5 [2024-11-07 16:40:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:10,684 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2024-11-07 16:40:10,684 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 16:40:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2024-11-07 16:40:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-07 16:40:10,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:10,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 16:40:10,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 16:40:10,686 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zero_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:10,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash 37399428, now seen corresponding path program 1 times [2024-11-07 16:40:10,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:10,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100958063] [2024-11-07 16:40:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:10,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:10,761 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 16:40:10,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:10,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100958063] [2024-11-07 16:40:10,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100958063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:10,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:10,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:40:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238727665] [2024-11-07 16:40:10,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:10,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:40:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:10,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:40:10,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:40:10,766 INFO L87 Difference]: Start difference. First operand 84 states and 89 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 16:40:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:10,823 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2024-11-07 16:40:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:40:10,824 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 16:40:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:10,825 INFO L225 Difference]: With dead ends: 83 [2024-11-07 16:40:10,825 INFO L226 Difference]: Without dead ends: 83 [2024-11-07 16:40:10,825 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 16:40:10,825 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 1 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:10,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 148 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:40:10,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-07 16:40:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-07 16:40:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 76 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 16:40:10,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2024-11-07 16:40:10,834 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 5 [2024-11-07 16:40:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:10,834 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2024-11-07 16:40:10,834 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 16:40:10,834 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2024-11-07 16:40:10,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-07 16:40:10,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:10,834 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:10,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 16:40:10,835 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:10,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:10,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1862562470, now seen corresponding path program 1 times [2024-11-07 16:40:10,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:10,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265660026] [2024-11-07 16:40:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:10,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:10,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:10,986 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 16:40:10,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:10,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265660026] [2024-11-07 16:40:10,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265660026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:10,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:10,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:40:10,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727116168] [2024-11-07 16:40:10,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:10,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:40:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:40:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:40:10,990 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16:40:11,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:11,101 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2024-11-07 16:40:11,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:40:11,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2024-11-07 16:40:11,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:11,102 INFO L225 Difference]: With dead ends: 81 [2024-11-07 16:40:11,102 INFO L226 Difference]: Without dead ends: 81 [2024-11-07 16:40:11,103 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 16:40:11,103 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 2 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:11,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 172 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-07 16:40:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-07 16:40:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 48 states have (on average 1.625) internal successors, (78), 74 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 16:40:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2024-11-07 16:40:11,116 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 16 [2024-11-07 16:40:11,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:11,118 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2024-11-07 16:40:11,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16:40:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2024-11-07 16:40:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-07 16:40:11,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:11,119 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:11,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 16:40:11,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:11,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1862562469, now seen corresponding path program 1 times [2024-11-07 16:40:11,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:11,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520728498] [2024-11-07 16:40:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:11,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:11,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:11,251 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 16:40:11,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520728498] [2024-11-07 16:40:11,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520728498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:11,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:40:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132458754] [2024-11-07 16:40:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:11,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:40:11,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:11,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:40:11,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:40:11,254 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16:40:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:11,338 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2024-11-07 16:40:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:40:11,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2024-11-07 16:40:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:11,339 INFO L225 Difference]: With dead ends: 79 [2024-11-07 16:40:11,339 INFO L226 Difference]: Without dead ends: 79 [2024-11-07 16:40:11,339 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 16:40:11,340 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 2 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:11,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 179 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-07 16:40:11,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-07 16:40:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 72 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 16:40:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2024-11-07 16:40:11,345 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 16 [2024-11-07 16:40:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:11,345 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2024-11-07 16:40:11,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16:40:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2024-11-07 16:40:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-07 16:40:11,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:11,346 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:11,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 16:40:11,346 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 28 more)] === [2024-11-07 16:40:11,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:11,347 INFO L85 PathProgramCache]: Analyzing trace with hash -434415733, now seen corresponding path program 1 times [2024-11-07 16:40:11,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:11,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530725080] [2024-11-07 16:40:11,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:11,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:11,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:11,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:40:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:11,653 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 16:40:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530725080] [2024-11-07 16:40:11,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530725080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131637031] [2024-11-07 16:40:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:11,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:11,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:11,656 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 16:40:11,659 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 16:40:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:11,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 16:40:11,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:11,789 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 16:40:11,835 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 16:40:11,864 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:40:11,864 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 16:40:11,875 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 16:40:11,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:12,061 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 16:40:12,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131637031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:12,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:12,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 11 [2024-11-07 16:40:12,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969169914] [2024-11-07 16:40:12,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:12,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 16:40:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 16:40:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2024-11-07 16:40:12,065 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:40:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:12,346 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2024-11-07 16:40:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:40:12,346 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 18 [2024-11-07 16:40:12,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:12,347 INFO L225 Difference]: With dead ends: 84 [2024-11-07 16:40:12,347 INFO L226 Difference]: Without dead ends: 84 [2024-11-07 16:40:12,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=119, Unknown=1, NotChecked=22, Total=182 [2024-11-07 16:40:12,348 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 8 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:12,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 333 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2024-11-07 16:40:12,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-07 16:40:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-07 16:40:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 74 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 16:40:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2024-11-07 16:40:12,354 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 18 [2024-11-07 16:40:12,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:12,354 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2024-11-07 16:40:12,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:40:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2024-11-07 16:40:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-07 16:40:12,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:12,355 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:12,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 16:40:12,556 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 16:40:12,556 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 28 more)] === [2024-11-07 16:40:12,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash -434415732, now seen corresponding path program 1 times [2024-11-07 16:40:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:12,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515912974] [2024-11-07 16:40:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:12,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:12,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:12,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:40:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:12,976 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 16:40:12,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:12,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515912974] [2024-11-07 16:40:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515912974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:12,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877478320] [2024-11-07 16:40:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:12,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:12,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:12,979 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 16:40:12,980 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 16:40:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:13,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 16:40:13,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:13,062 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 16:40:13,271 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 16:40:13,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:13,312 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 16 treesize of output 11 [2024-11-07 16:40:13,321 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:13,322 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 16:40:13,356 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 16:40:13,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:13,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877478320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:13,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:13,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2024-11-07 16:40:13,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235897656] [2024-11-07 16:40:13,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:13,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 16:40:13,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:13,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 16:40:13,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=291, Unknown=1, NotChecked=34, Total=380 [2024-11-07 16:40:13,471 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 13 states have internal predecessors, (26), 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 16:40:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:13,829 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-11-07 16:40:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:13,830 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 13 states have internal predecessors, (26), 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 18 [2024-11-07 16:40:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:13,831 INFO L225 Difference]: With dead ends: 85 [2024-11-07 16:40:13,831 INFO L226 Difference]: Without dead ends: 85 [2024-11-07 16:40:13,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=356, Unknown=1, NotChecked=38, Total=462 [2024-11-07 16:40:13,832 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 17 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:13,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 509 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 374 Invalid, 0 Unknown, 88 Unchecked, 0.3s Time] [2024-11-07 16:40:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-07 16:40:13,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-07 16:40:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 73 states have internal predecessors, (78), 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 16:40:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2024-11-07 16:40:13,842 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 18 [2024-11-07 16:40:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:13,843 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2024-11-07 16:40:13,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 13 states have internal predecessors, (26), 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 16:40:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2024-11-07 16:40:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-07 16:40:13,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:13,843 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] [2024-11-07 16:40:13,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 16:40:14,044 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 16:40:14,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:14,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash -492562465, now seen corresponding path program 1 times [2024-11-07 16:40:14,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:14,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961771357] [2024-11-07 16:40:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:14,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,159 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 16:40:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:14,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961771357] [2024-11-07 16:40:14,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961771357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:14,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:14,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:40:14,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820133079] [2024-11-07 16:40:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:14,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:40:14,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:40:14,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:40:14,161 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 16:40:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:14,308 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2024-11-07 16:40:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:40:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 22 [2024-11-07 16:40:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:14,311 INFO L225 Difference]: With dead ends: 83 [2024-11-07 16:40:14,311 INFO L226 Difference]: Without dead ends: 83 [2024-11-07 16:40:14,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:40:14,312 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 11 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:14,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 272 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-07 16:40:14,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2024-11-07 16:40:14,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 70 states have internal predecessors, (75), 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 16:40:14,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2024-11-07 16:40:14,321 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 22 [2024-11-07 16:40:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:14,323 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2024-11-07 16:40:14,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 16:40:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2024-11-07 16:40:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-07 16:40:14,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:14,324 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] [2024-11-07 16:40:14,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 16:40:14,325 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:14,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:14,325 INFO L85 PathProgramCache]: Analyzing trace with hash -492562464, now seen corresponding path program 1 times [2024-11-07 16:40:14,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:14,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271856888] [2024-11-07 16:40:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:14,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,545 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 16:40:14,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:14,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271856888] [2024-11-07 16:40:14,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271856888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:14,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:14,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:40:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361572267] [2024-11-07 16:40:14,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:14,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:40:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:40:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:40:14,548 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 16:40:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:14,673 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2024-11-07 16:40:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:40:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 22 [2024-11-07 16:40:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:14,675 INFO L225 Difference]: With dead ends: 82 [2024-11-07 16:40:14,675 INFO L226 Difference]: Without dead ends: 82 [2024-11-07 16:40:14,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:40:14,675 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 5 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:14,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 309 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:14,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-07 16:40:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2024-11-07 16:40:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 69 states have internal predecessors, (74), 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 16:40:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2024-11-07 16:40:14,686 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 22 [2024-11-07 16:40:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:14,686 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2024-11-07 16:40:14,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 16:40:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2024-11-07 16:40:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-07 16:40:14,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:14,687 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:14,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 16:40:14,688 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:14,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:14,690 INFO L85 PathProgramCache]: Analyzing trace with hash 997710085, now seen corresponding path program 1 times [2024-11-07 16:40:14,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:14,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107679719] [2024-11-07 16:40:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,996 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 16:40:14,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:14,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107679719] [2024-11-07 16:40:14,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107679719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:14,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:14,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-07 16:40:14,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087451484] [2024-11-07 16:40:14,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:14,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 16:40:14,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:14,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 16:40:14,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-07 16:40:14,998 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 16:40:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:15,292 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2024-11-07 16:40:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:40:15,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 28 [2024-11-07 16:40:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:15,293 INFO L225 Difference]: With dead ends: 78 [2024-11-07 16:40:15,293 INFO L226 Difference]: Without dead ends: 78 [2024-11-07 16:40:15,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-07 16:40:15,294 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 29 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:15,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 321 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:40:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-07 16:40:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-07 16:40:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 70 states have internal predecessors, (77), 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 16:40:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2024-11-07 16:40:15,302 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 28 [2024-11-07 16:40:15,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:15,302 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2024-11-07 16:40:15,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 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 16:40:15,302 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2024-11-07 16:40:15,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-07 16:40:15,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:15,303 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:15,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 16:40:15,304 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:15,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:15,304 INFO L85 PathProgramCache]: Analyzing trace with hash 997710086, now seen corresponding path program 1 times [2024-11-07 16:40:15,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:15,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20683127] [2024-11-07 16:40:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:15,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:15,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:15,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:15,739 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 16:40:15,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:15,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20683127] [2024-11-07 16:40:15,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20683127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:15,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:15,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-07 16:40:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085610618] [2024-11-07 16:40:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:15,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 16:40:15,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 16:40:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-07 16:40:15,742 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 16:40:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:16,066 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2024-11-07 16:40:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 16:40:16,066 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 28 [2024-11-07 16:40:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:16,067 INFO L225 Difference]: With dead ends: 92 [2024-11-07 16:40:16,067 INFO L226 Difference]: Without dead ends: 92 [2024-11-07 16:40:16,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-07 16:40:16,068 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:16,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 374 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:40:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-07 16:40:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2024-11-07 16:40:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.4) internal successors, (91), 82 states have internal predecessors, (91), 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 16:40:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2024-11-07 16:40:16,072 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 28 [2024-11-07 16:40:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:16,073 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2024-11-07 16:40:16,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 16:40:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2024-11-07 16:40:16,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-07 16:40:16,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:16,074 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:16,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 16:40:16,074 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:16,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:16,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1052903553, now seen corresponding path program 1 times [2024-11-07 16:40:16,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:16,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995624384] [2024-11-07 16:40:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:16,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:16,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:16,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:40:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:16,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:40:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:16,295 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 16:40:16,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:16,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995624384] [2024-11-07 16:40:16,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995624384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:16,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774016890] [2024-11-07 16:40:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:16,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:16,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:16,298 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 16:40:16,300 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 16:40:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:16,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 16:40:16,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:16,397 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 16:40:16,412 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 16:40:16,420 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 16:40:16,446 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 16:40:16,461 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:40:16,462 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 16:40:16,471 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 16:40:16,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:16,588 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 16:40:16,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774016890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:16,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:16,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 13 [2024-11-07 16:40:16,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038088317] [2024-11-07 16:40:16,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:16,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 16:40:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 16:40:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-07 16:40:16,589 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 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 16:40:16,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:16,822 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2024-11-07 16:40:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:40:16,822 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 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 16:40:16,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:16,823 INFO L225 Difference]: With dead ends: 90 [2024-11-07 16:40:16,823 INFO L226 Difference]: Without dead ends: 90 [2024-11-07 16:40:16,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 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 16:40:16,824 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 12 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:16,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 406 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 262 Invalid, 0 Unknown, 80 Unchecked, 0.2s Time] [2024-11-07 16:40:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-07 16:40:16,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-07 16:40:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 81 states have internal predecessors, (90), 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 16:40:16,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2024-11-07 16:40:16,828 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 30 [2024-11-07 16:40:16,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:16,828 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2024-11-07 16:40:16,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 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 16:40:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2024-11-07 16:40:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-07 16:40:16,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:16,830 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:16,846 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 16:40:17,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:17,034 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:17,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:17,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1052903554, now seen corresponding path program 1 times [2024-11-07 16:40:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:17,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771459069] [2024-11-07 16:40:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:17,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:40:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:40:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,447 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 16:40:17,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:17,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771459069] [2024-11-07 16:40:17,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771459069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:17,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124468918] [2024-11-07 16:40:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:17,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:17,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:17,450 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 16:40:17,452 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 16:40:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 16:40:17,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:17,561 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 16:40:17,564 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 16:40:17,673 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 16:40:17,678 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 16:40:17,717 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 16:40:17,823 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 16:40:17,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:17,859 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 16:40:17,865 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:17,866 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 16:40:17,889 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 16:40:17,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:17,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124468918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:17,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2024-11-07 16:40:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233163723] [2024-11-07 16:40:17,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:17,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 16:40:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 16:40:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=443, Unknown=1, NotChecked=42, Total=552 [2024-11-07 16:40:17,998 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 16 states have internal predecessors, (40), 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 16:40:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:18,417 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2024-11-07 16:40:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:40:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 16 states have internal predecessors, (40), 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 30 [2024-11-07 16:40:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:18,418 INFO L225 Difference]: With dead ends: 91 [2024-11-07 16:40:18,418 INFO L226 Difference]: Without dead ends: 91 [2024-11-07 16:40:18,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=610, Unknown=1, NotChecked=50, Total=756 [2024-11-07 16:40:18,419 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 10 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:18,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 654 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 485 Invalid, 0 Unknown, 81 Unchecked, 0.3s Time] [2024-11-07 16:40:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-07 16:40:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-11-07 16:40:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.375) internal successors, (88), 79 states have internal predecessors, (88), 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 16:40:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2024-11-07 16:40:18,427 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 30 [2024-11-07 16:40:18,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:18,428 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2024-11-07 16:40:18,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 16 states have internal predecessors, (40), 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 16:40:18,428 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2024-11-07 16:40:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-07 16:40:18,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:18,429 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] [2024-11-07 16:40:18,448 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 16:40:18,629 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,SelfDestructingSolverStorable11 [2024-11-07 16:40:18,630 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:18,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:18,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1021640053, now seen corresponding path program 1 times [2024-11-07 16:40:18,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:18,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727315856] [2024-11-07 16:40:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:18,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:18,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:18,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:18,767 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 16:40:18,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:18,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727315856] [2024-11-07 16:40:18,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727315856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:18,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:18,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 16:40:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612297596] [2024-11-07 16:40:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:18,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:40:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:18,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:40:18,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:18,769 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 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 16:40:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:18,872 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2024-11-07 16:40:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:18,872 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 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 30 [2024-11-07 16:40:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:18,873 INFO L225 Difference]: With dead ends: 92 [2024-11-07 16:40:18,873 INFO L226 Difference]: Without dead ends: 92 [2024-11-07 16:40:18,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:18,873 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 25 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:18,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 498 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-07 16:40:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2024-11-07 16:40:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.34375) internal successors, (86), 79 states have internal predecessors, (86), 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 16:40:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2024-11-07 16:40:18,878 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 30 [2024-11-07 16:40:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:18,878 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2024-11-07 16:40:18,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 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 16:40:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2024-11-07 16:40:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-07 16:40:18,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:18,881 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:18,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 16:40:18,881 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:18,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:18,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1607511573, now seen corresponding path program 1 times [2024-11-07 16:40:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:18,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258325649] [2024-11-07 16:40:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:18,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:18,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:19,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:19,039 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 16:40:19,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:19,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258325649] [2024-11-07 16:40:19,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258325649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:19,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:19,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:40:19,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017528816] [2024-11-07 16:40:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:19,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:40:19,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:40:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:19,041 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 16:40:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:19,188 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2024-11-07 16:40:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:19,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 31 [2024-11-07 16:40:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:19,190 INFO L225 Difference]: With dead ends: 91 [2024-11-07 16:40:19,190 INFO L226 Difference]: Without dead ends: 91 [2024-11-07 16:40:19,190 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 16:40:19,191 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 21 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:19,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 432 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:19,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-07 16:40:19,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2024-11-07 16:40:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.3432835820895523) internal successors, (90), 82 states have internal predecessors, (90), 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 16:40:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2024-11-07 16:40:19,196 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 31 [2024-11-07 16:40:19,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:19,196 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2024-11-07 16:40:19,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 16:40:19,196 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2024-11-07 16:40:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-07 16:40:19,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:19,197 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] [2024-11-07 16:40:19,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 16:40:19,197 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:19,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash 290017258, now seen corresponding path program 1 times [2024-11-07 16:40:19,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:19,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834252093] [2024-11-07 16:40:19,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:19,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:19,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:19,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:19,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:19,381 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 16:40:19,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:19,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834252093] [2024-11-07 16:40:19,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834252093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:19,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039524797] [2024-11-07 16:40:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:19,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:19,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:19,384 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 16:40:19,386 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 16:40:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:19,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 16:40:19,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:19,525 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 16:40:19,565 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-07 16:40:19,566 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 16:40:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:19,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:40:19,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039524797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:19,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:40:19,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-07 16:40:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368562301] [2024-11-07 16:40:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:19,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:40:19,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:19,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:40:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2024-11-07 16:40:19,569 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 16:40:19,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:19,624 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2024-11-07 16:40:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:40:19,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-07 16:40:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:19,625 INFO L225 Difference]: With dead ends: 96 [2024-11-07 16:40:19,625 INFO L226 Difference]: Without dead ends: 96 [2024-11-07 16:40:19,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2024-11-07 16:40:19,626 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 9 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:19,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 139 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 95 Unchecked, 0.0s Time] [2024-11-07 16:40:19,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-07 16:40:19,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2024-11-07 16:40:19,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 85 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 16:40:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2024-11-07 16:40:19,630 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 32 [2024-11-07 16:40:19,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:19,630 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2024-11-07 16:40:19,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 16:40:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2024-11-07 16:40:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-07 16:40:19,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:19,631 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] [2024-11-07 16:40:19,648 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 16:40:19,834 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,SelfDestructingSolverStorable14 [2024-11-07 16:40:19,835 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:19,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash 290017259, now seen corresponding path program 1 times [2024-11-07 16:40:19,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:19,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790105767] [2024-11-07 16:40:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:19,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:19,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:19,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:20,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:20,152 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 16:40:20,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790105767] [2024-11-07 16:40:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790105767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088271028] [2024-11-07 16:40:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:20,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:20,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:20,155 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 16:40:20,157 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 16:40:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:20,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-07 16:40:20,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:20,269 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 16:40:20,397 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 16:40:20,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:20,433 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 16:40:20,443 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:20,443 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 16:40:20,446 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 16:40:20,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:20,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088271028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:20,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:20,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2024-11-07 16:40:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655095749] [2024-11-07 16:40:20,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:20,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 16:40:20,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:20,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 16:40:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=288, Unknown=1, NotChecked=34, Total=380 [2024-11-07 16:40:20,548 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 13 states have internal predecessors, (42), 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 16:40:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:20,814 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2024-11-07 16:40:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:40:20,814 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 13 states have internal predecessors, (42), 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 32 [2024-11-07 16:40:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:20,815 INFO L225 Difference]: With dead ends: 103 [2024-11-07 16:40:20,815 INFO L226 Difference]: Without dead ends: 103 [2024-11-07 16:40:20,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=354, Unknown=1, NotChecked=38, Total=462 [2024-11-07 16:40:20,816 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 11 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:20,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 440 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 289 Invalid, 0 Unknown, 85 Unchecked, 0.2s Time] [2024-11-07 16:40:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-07 16:40:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2024-11-07 16:40:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 90 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 16:40:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2024-11-07 16:40:20,822 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 32 [2024-11-07 16:40:20,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:20,823 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2024-11-07 16:40:20,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 13 states have internal predecessors, (42), 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 16:40:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2024-11-07 16:40:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-07 16:40:20,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:20,825 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] [2024-11-07 16:40:20,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 16:40:21,025 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,SelfDestructingSolverStorable15 [2024-11-07 16:40:21,026 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:21,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash 492043658, now seen corresponding path program 1 times [2024-11-07 16:40:21,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:21,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959750226] [2024-11-07 16:40:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,713 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 16:40:21,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:21,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959750226] [2024-11-07 16:40:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959750226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:21,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198874130] [2024-11-07 16:40:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:21,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:21,716 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 16:40:21,718 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 16:40:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-07 16:40:21,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:21,837 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 16:40:21,872 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 16:40:21,878 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 16:40:22,262 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:22,262 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 16:40:26,272 WARN L851 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0) (or (= (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0) (exists ((|v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| |c_#memory_$Pointer$#0.offset|))) (and (= |c_#memory_$Pointer$#0.offset| (store |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| .cse0 (select |c_#memory_$Pointer$#0.offset| .cse0))) (= |c_ULTIMATE.start_create_#t~ret9#1.base| .cse0) (= (select (select |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0))))) (not (= |c_ULTIMATE.start_create_#t~ret9#1.base| |c_ULTIMATE.start_main_~shared~0#1.base|))) is different from false [2024-11-07 16:40:26,274 WARN L873 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0) (or (= (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0) (exists ((|v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| |c_#memory_$Pointer$#0.offset|))) (and (= |c_#memory_$Pointer$#0.offset| (store |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| .cse0 (select |c_#memory_$Pointer$#0.offset| .cse0))) (= |c_ULTIMATE.start_create_#t~ret9#1.base| .cse0) (= (select (select |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0))))) (not (= |c_ULTIMATE.start_create_#t~ret9#1.base| |c_ULTIMATE.start_main_~shared~0#1.base|))) is different from true [2024-11-07 16:40:26,321 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 16:40:26,325 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 16:40:26,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:26,425 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 16:40:26,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:26,433 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 16:40:26,556 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 16:40:26,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:26,690 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_706 (Array Int Int))) (= 0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~1#1.base| v_ArrVal_706) |c_ULTIMATE.start_main_~shared~0#1.base|) 0))) (forall ((v_ArrVal_705 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~1#1.base| v_ArrVal_705) |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0))) is different from false [2024-11-07 16:40:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198874130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:26,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:26,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 33 [2024-11-07 16:40:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794065080] [2024-11-07 16:40:26,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:26,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 16:40:26,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 16:40:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1163, Unknown=20, NotChecked=138, Total=1406 [2024-11-07 16:40:26,875 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 27 states have internal predecessors, (50), 3 states have call successors, (4), 3 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 16:40:27,268 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_~shared~0#1.base|))) (let ((.cse1 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~shared~0#1.base|)) (.cse2 (= (select .cse0 0) 0))) (and (= (select .cse0 |c_ULTIMATE.start_main_~shared~0#1.offset|) 0) (= (select .cse1 0) 0) (= (select .cse1 |c_ULTIMATE.start_main_~shared~0#1.offset|) 0) (or .cse2 (exists ((|v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| |c_#memory_$Pointer$#0.offset|))) (and (= |c_#memory_$Pointer$#0.offset| (store |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| .cse3 (select |c_#memory_$Pointer$#0.offset| .cse3))) (= |c_ULTIMATE.start_create_#t~ret9#1.base| .cse3) (= (select (select |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0))))) .cse2 (not (= |c_ULTIMATE.start_create_#t~ret9#1.base| |c_ULTIMATE.start_main_~shared~0#1.base|))))) is different from false [2024-11-07 16:40:27,271 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_~shared~0#1.base|))) (let ((.cse1 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~shared~0#1.base|)) (.cse2 (= (select .cse0 0) 0))) (and (= (select .cse0 |c_ULTIMATE.start_main_~shared~0#1.offset|) 0) (= (select .cse1 0) 0) (= (select .cse1 |c_ULTIMATE.start_main_~shared~0#1.offset|) 0) (or .cse2 (exists ((|v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| |c_#memory_$Pointer$#0.offset|))) (and (= |c_#memory_$Pointer$#0.offset| (store |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| .cse3 (select |c_#memory_$Pointer$#0.offset| .cse3))) (= |c_ULTIMATE.start_create_#t~ret9#1.base| .cse3) (= (select (select |v_#memory_$Pointer$#0.offset_BEFORE_CALL_2| |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0))))) .cse2 (not (= |c_ULTIMATE.start_create_#t~ret9#1.base| |c_ULTIMATE.start_main_~shared~0#1.base|))))) is different from true [2024-11-07 16:40:27,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:27,769 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2024-11-07 16:40:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 16:40:27,770 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 27 states have internal predecessors, (50), 3 states have call successors, (4), 3 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 34 [2024-11-07 16:40:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:27,771 INFO L225 Difference]: With dead ends: 104 [2024-11-07 16:40:27,771 INFO L226 Difference]: Without dead ends: 104 [2024-11-07 16:40:27,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=147, Invalid=2002, Unknown=25, NotChecked=276, Total=2450 [2024-11-07 16:40:27,772 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 18 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:27,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1091 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 997 Invalid, 0 Unknown, 128 Unchecked, 0.6s Time] [2024-11-07 16:40:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-07 16:40:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2024-11-07 16:40:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 78 states have (on average 1.3333333333333333) internal successors, (104), 93 states have internal predecessors, (104), 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 16:40:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2024-11-07 16:40:27,777 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 34 [2024-11-07 16:40:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:27,777 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2024-11-07 16:40:27,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 27 states have internal predecessors, (50), 3 states have call successors, (4), 3 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 16:40:27,777 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2024-11-07 16:40:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-07 16:40:27,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:27,778 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] [2024-11-07 16:40:27,795 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 16:40:27,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:27,979 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:27,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:27,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1570038634, now seen corresponding path program 1 times [2024-11-07 16:40:27,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:27,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717841917] [2024-11-07 16:40:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:27,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:28,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:28,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717841917] [2024-11-07 16:40:28,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717841917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:28,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:28,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:40:28,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39515511] [2024-11-07 16:40:28,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:28,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:40:28,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:28,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:40:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:40:28,218 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 16:40:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:28,331 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2024-11-07 16:40:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:40:28,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-11-07 16:40:28,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:28,333 INFO L225 Difference]: With dead ends: 101 [2024-11-07 16:40:28,333 INFO L226 Difference]: Without dead ends: 101 [2024-11-07 16:40:28,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:40:28,333 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 4 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:28,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 342 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:28,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-07 16:40:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-07 16:40:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 78 states have (on average 1.3076923076923077) internal successors, (102), 92 states have internal predecessors, (102), 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 16:40:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2024-11-07 16:40:28,338 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 35 [2024-11-07 16:40:28,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:28,338 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2024-11-07 16:40:28,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 16:40:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2024-11-07 16:40:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-07 16:40:28,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:28,341 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] [2024-11-07 16:40:28,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 16:40:28,342 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:28,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1570038635, now seen corresponding path program 1 times [2024-11-07 16:40:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802611835] [2024-11-07 16:40:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:40:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802611835] [2024-11-07 16:40:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802611835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:28,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:28,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:40:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942539420] [2024-11-07 16:40:28,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:28,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:40:28,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:28,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:40:28,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:40:28,461 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 16:40:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:28,574 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2024-11-07 16:40:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:40:28,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-11-07 16:40:28,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:28,576 INFO L225 Difference]: With dead ends: 100 [2024-11-07 16:40:28,576 INFO L226 Difference]: Without dead ends: 100 [2024-11-07 16:40:28,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:40:28,576 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 3 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:28,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 316 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-07 16:40:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-07 16:40:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 91 states have internal predecessors, (100), 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 16:40:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2024-11-07 16:40:28,581 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 35 [2024-11-07 16:40:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:28,581 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2024-11-07 16:40:28,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 16:40:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2024-11-07 16:40:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-07 16:40:28,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:28,582 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 16:40:28,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 16:40:28,582 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:28,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash 407508154, now seen corresponding path program 1 times [2024-11-07 16:40:28,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:28,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781305066] [2024-11-07 16:40:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:28,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,912 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 16:40:28,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781305066] [2024-11-07 16:40:28,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781305066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589147895] [2024-11-07 16:40:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:28,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:28,915 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 16:40:28,918 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 16:40:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:29,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-07 16:40:29,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:29,057 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 16:40:29,123 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:29,123 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 16:40:29,193 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 16:40:29,199 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 16:40:29,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:29,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:29,253 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 17 treesize of output 21 [2024-11-07 16:40:29,447 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 16:40:29,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589147895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:29,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:29,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2024-11-07 16:40:29,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203683641] [2024-11-07 16:40:29,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:29,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 16:40:29,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:29,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 16:40:29,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2024-11-07 16:40:29,449 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 29 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 22 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 16:40:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:30,053 INFO L93 Difference]: Finished difference Result 127 states and 146 transitions. [2024-11-07 16:40:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 16:40:30,054 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 22 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2024-11-07 16:40:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:30,055 INFO L225 Difference]: With dead ends: 127 [2024-11-07 16:40:30,055 INFO L226 Difference]: Without dead ends: 127 [2024-11-07 16:40:30,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=1294, Unknown=0, NotChecked=0, Total=1406 [2024-11-07 16:40:30,056 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 79 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:30,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 528 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:40:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-07 16:40:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2024-11-07 16:40:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 105 states have internal predecessors, (120), 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 16:40:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2024-11-07 16:40:30,060 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 36 [2024-11-07 16:40:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:30,061 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2024-11-07 16:40:30,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 22 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 16:40:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2024-11-07 16:40:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-07 16:40:30,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:30,061 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 16:40:30,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 16:40:30,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:30,262 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:30,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:30,263 INFO L85 PathProgramCache]: Analyzing trace with hash 407508155, now seen corresponding path program 1 times [2024-11-07 16:40:30,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:30,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322612039] [2024-11-07 16:40:30,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:30,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:30,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:30,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:30,479 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 16:40:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322612039] [2024-11-07 16:40:30,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322612039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:30,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:30,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:40:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975823417] [2024-11-07 16:40:30,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:30,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:40:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:40:30,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:30,482 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 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 16:40:30,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:30,652 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2024-11-07 16:40:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:30,653 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), 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 36 [2024-11-07 16:40:30,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:30,655 INFO L225 Difference]: With dead ends: 141 [2024-11-07 16:40:30,655 INFO L226 Difference]: Without dead ends: 141 [2024-11-07 16:40:30,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:30,656 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 7 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:30,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 394 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:40:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-07 16:40:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2024-11-07 16:40:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 128 states have internal predecessors, (154), 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 16:40:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 166 transitions. [2024-11-07 16:40:30,665 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 166 transitions. Word has length 36 [2024-11-07 16:40:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:30,665 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 166 transitions. [2024-11-07 16:40:30,666 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), 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 16:40:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 166 transitions. [2024-11-07 16:40:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-07 16:40:30,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:30,666 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] [2024-11-07 16:40:30,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 16:40:30,666 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:30,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash -252150541, now seen corresponding path program 1 times [2024-11-07 16:40:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:30,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036793706] [2024-11-07 16:40:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:30,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:30,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:30,783 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 16:40:30,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:30,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036793706] [2024-11-07 16:40:30,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036793706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:30,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:30,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 16:40:30,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593269067] [2024-11-07 16:40:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:30,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:40:30,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:40:30,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:30,785 INFO L87 Difference]: Start difference. First operand 137 states and 166 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 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 16:40:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:30,892 INFO L93 Difference]: Finished difference Result 144 states and 173 transitions. [2024-11-07 16:40:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:30,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 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 37 [2024-11-07 16:40:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:30,894 INFO L225 Difference]: With dead ends: 144 [2024-11-07 16:40:30,896 INFO L226 Difference]: Without dead ends: 144 [2024-11-07 16:40:30,896 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 16:40:30,897 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 22 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 468 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 16:40:30,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 468 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-07 16:40:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2024-11-07 16:40:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 117 states have (on average 1.2991452991452992) internal successors, (152), 129 states have internal predecessors, (152), 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 16:40:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2024-11-07 16:40:30,906 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 37 [2024-11-07 16:40:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:30,906 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2024-11-07 16:40:30,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 8 states have internal predecessors, (33), 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 16:40:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2024-11-07 16:40:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-07 16:40:30,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:30,907 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] [2024-11-07 16:40:30,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 16:40:30,907 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:30,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1797049481, now seen corresponding path program 1 times [2024-11-07 16:40:30,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:30,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216615534] [2024-11-07 16:40:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:30,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,046 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 16:40:31,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216615534] [2024-11-07 16:40:31,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216615534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:31,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:31,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:40:31,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671392905] [2024-11-07 16:40:31,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:31,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:40:31,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:40:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:31,048 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 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 16:40:31,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:31,178 INFO L93 Difference]: Finished difference Result 143 states and 171 transitions. [2024-11-07 16:40:31,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:31,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 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 39 [2024-11-07 16:40:31,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:31,179 INFO L225 Difference]: With dead ends: 143 [2024-11-07 16:40:31,179 INFO L226 Difference]: Without dead ends: 143 [2024-11-07 16:40:31,179 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 16:40:31,180 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:31,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 426 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-07 16:40:31,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2024-11-07 16:40:31,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 133 states have internal predecessors, (159), 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 16:40:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2024-11-07 16:40:31,186 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 39 [2024-11-07 16:40:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:31,186 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2024-11-07 16:40:31,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 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 16:40:31,187 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2024-11-07 16:40:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-07 16:40:31,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:31,187 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] [2024-11-07 16:40:31,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 16:40:31,187 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:31,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:31,191 INFO L85 PathProgramCache]: Analyzing trace with hash -884584836, now seen corresponding path program 1 times [2024-11-07 16:40:31,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:31,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551136391] [2024-11-07 16:40:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:31,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:40:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 16:40:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,566 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 16:40:31,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:31,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551136391] [2024-11-07 16:40:31,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551136391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:31,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546817745] [2024-11-07 16:40:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:31,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:31,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:31,570 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 16:40:31,572 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 16:40:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-07 16:40:31,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:31,717 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 16:40:31,725 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 16:40:31,899 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 16:40:31,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:31,919 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 16:40:31,929 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:31,930 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 16:40:32,084 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 16:40:32,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:32,110 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 16:40:32,115 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:32,116 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 16:40:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-07 16:40:32,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:32,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546817745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:32,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-11-07 16:40:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9548837] [2024-11-07 16:40:32,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:32,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 16:40:32,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:32,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 16:40:32,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=634, Unknown=2, NotChecked=102, Total=812 [2024-11-07 16:40:32,299 INFO L87 Difference]: Start difference. First operand 142 states and 171 transitions. Second operand has 26 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:40:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:32,754 INFO L93 Difference]: Finished difference Result 164 states and 199 transitions. [2024-11-07 16:40:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 16:40:32,755 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2024-11-07 16:40:32,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:32,756 INFO L225 Difference]: With dead ends: 164 [2024-11-07 16:40:32,756 INFO L226 Difference]: Without dead ends: 164 [2024-11-07 16:40:32,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=954, Unknown=2, NotChecked=126, Total=1190 [2024-11-07 16:40:32,757 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 17 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:32,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 554 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 464 Invalid, 0 Unknown, 199 Unchecked, 0.3s Time] [2024-11-07 16:40:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-07 16:40:32,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2024-11-07 16:40:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 139 states have (on average 1.2877697841726619) internal successors, (179), 151 states have internal predecessors, (179), 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 16:40:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 195 transitions. [2024-11-07 16:40:32,763 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 195 transitions. Word has length 40 [2024-11-07 16:40:32,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:32,764 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 195 transitions. [2024-11-07 16:40:32,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:40:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 195 transitions. [2024-11-07 16:40:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 16:40:32,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:32,765 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] [2024-11-07 16:40:32,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 16:40:32,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:32,970 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:32,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash 866401823, now seen corresponding path program 1 times [2024-11-07 16:40:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:32,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836953506] [2024-11-07 16:40:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:33,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:33,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:33,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:33,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836953506] [2024-11-07 16:40:33,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836953506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:33,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210261372] [2024-11-07 16:40:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:33,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:33,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:33,456 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 16:40:33,458 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 16:40:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:33,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-07 16:40:33,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:33,599 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 16:40:33,605 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 16:40:33,616 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 16:40:33,620 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 16:40:33,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:33,720 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 16:40:33,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:33,726 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 16:40:33,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:33,870 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 16:40:33,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:33,877 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 16:40:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:33,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:34,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-07 16:40:34,717 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 48 treesize of output 46 [2024-11-07 16:40:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:34,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210261372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:34,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:34,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2024-11-07 16:40:34,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729013323] [2024-11-07 16:40:34,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:34,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 16:40:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 16:40:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=798, Unknown=0, NotChecked=0, Total=870 [2024-11-07 16:40:34,745 INFO L87 Difference]: Start difference. First operand 162 states and 195 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 26 states have internal predecessors, (69), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:40:35,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:35,272 INFO L93 Difference]: Finished difference Result 169 states and 198 transitions. [2024-11-07 16:40:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 16:40:35,273 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 26 states have internal predecessors, (69), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-07 16:40:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:35,274 INFO L225 Difference]: With dead ends: 169 [2024-11-07 16:40:35,274 INFO L226 Difference]: Without dead ends: 169 [2024-11-07 16:40:35,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=1219, Unknown=0, NotChecked=0, Total=1332 [2024-11-07 16:40:35,275 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 24 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:35,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 956 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:40:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-07 16:40:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2024-11-07 16:40:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 142 states have (on average 1.2816901408450705) internal successors, (182), 154 states have internal predecessors, (182), 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 16:40:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2024-11-07 16:40:35,286 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 42 [2024-11-07 16:40:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:35,286 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2024-11-07 16:40:35,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 26 states have internal predecessors, (69), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:40:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2024-11-07 16:40:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-07 16:40:35,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:35,287 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] [2024-11-07 16:40:35,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-07 16:40:35,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-07 16:40:35,488 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:35,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1088651310, now seen corresponding path program 1 times [2024-11-07 16:40:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:35,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450764095] [2024-11-07 16:40:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:35,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:35,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:35,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:36,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:36,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450764095] [2024-11-07 16:40:36,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450764095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:36,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569312094] [2024-11-07 16:40:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:36,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:36,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:36,054 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 16:40:36,055 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 16:40:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:36,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-07 16:40:36,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:36,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569312094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:37,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:37,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 33 [2024-11-07 16:40:37,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947760369] [2024-11-07 16:40:37,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:37,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 16:40:37,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 16:40:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1529, Unknown=0, NotChecked=0, Total=1640 [2024-11-07 16:40:37,229 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand has 34 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 28 states have internal predecessors, (73), 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 16:40:37,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:37,773 INFO L93 Difference]: Finished difference Result 176 states and 209 transitions. [2024-11-07 16:40:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 16:40:37,773 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 28 states have internal predecessors, (73), 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 43 [2024-11-07 16:40:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:37,774 INFO L225 Difference]: With dead ends: 176 [2024-11-07 16:40:37,774 INFO L226 Difference]: Without dead ends: 157 [2024-11-07 16:40:37,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1529, Unknown=0, NotChecked=0, Total=1640 [2024-11-07 16:40:37,775 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 4 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:37,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 780 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1136 Invalid, 1 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 16:40:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-07 16:40:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-07 16:40:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 133 states have (on average 1.2932330827067668) internal successors, (172), 145 states have internal predecessors, (172), 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 16:40:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 188 transitions. [2024-11-07 16:40:37,780 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 188 transitions. Word has length 43 [2024-11-07 16:40:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:37,780 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 188 transitions. [2024-11-07 16:40:37,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 28 states have internal predecessors, (73), 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 16:40:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 188 transitions. [2024-11-07 16:40:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 16:40:37,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:37,782 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, 1] [2024-11-07 16:40:37,796 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 16:40:37,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-07 16:40:37,983 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:37,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash 757015256, now seen corresponding path program 1 times [2024-11-07 16:40:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:37,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805011020] [2024-11-07 16:40:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:38,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:38,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:38,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:38,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:38,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805011020] [2024-11-07 16:40:38,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805011020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:38,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738235209] [2024-11-07 16:40:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:38,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:38,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:38,490 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 16:40:38,491 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 16:40:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:38,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-07 16:40:38,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:38,651 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 16:40:38,656 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 16:40:38,923 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:40:38,923 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 16:40:38,937 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-07 16:40:38,937 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 16:40:39,077 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:40:39,077 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 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-07 16:40:39,098 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-07 16:40:39,098 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 16:40:39,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 16:40:39,200 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 17 treesize of output 9 [2024-11-07 16:40:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:39,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:39,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738235209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:39,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:39,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 32 [2024-11-07 16:40:39,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623485605] [2024-11-07 16:40:39,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:39,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 16:40:39,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 16:40:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1147, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 16:40:39,500 INFO L87 Difference]: Start difference. First operand 156 states and 188 transitions. Second operand has 33 states, 30 states have (on average 2.4) internal successors, (72), 27 states have internal predecessors, (72), 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 16:40:40,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:40,151 INFO L93 Difference]: Finished difference Result 192 states and 228 transitions. [2024-11-07 16:40:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 16:40:40,152 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.4) internal successors, (72), 27 states have internal predecessors, (72), 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 44 [2024-11-07 16:40:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:40,153 INFO L225 Difference]: With dead ends: 192 [2024-11-07 16:40:40,153 INFO L226 Difference]: Without dead ends: 192 [2024-11-07 16:40:40,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=2050, Unknown=0, NotChecked=0, Total=2256 [2024-11-07 16:40:40,154 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 62 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:40,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 562 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:40:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-07 16:40:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2024-11-07 16:40:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 163 states have (on average 1.2760736196319018) internal successors, (208), 175 states have internal predecessors, (208), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 16:40:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 228 transitions. [2024-11-07 16:40:40,159 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 228 transitions. Word has length 44 [2024-11-07 16:40:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:40,160 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 228 transitions. [2024-11-07 16:40:40,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.4) internal successors, (72), 27 states have internal predecessors, (72), 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 16:40:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 228 transitions. [2024-11-07 16:40:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-07 16:40:40,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:40,160 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, 1, 1, 1] [2024-11-07 16:40:40,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-07 16:40:40,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:40,361 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:40,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1244265856, now seen corresponding path program 1 times [2024-11-07 16:40:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:40,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415424363] [2024-11-07 16:40:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:40,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:40,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:40,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:40:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:40,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 16:40:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:41,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415424363] [2024-11-07 16:40:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415424363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190023929] [2024-11-07 16:40:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:41,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:41,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:41,102 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 16:40:41,103 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 16:40:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:41,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-07 16:40:41,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:41,251 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 16:40:41,450 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-07 16:40:41,450 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 16:40:41,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 16:40:41,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:41,695 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 26 treesize of output 19 [2024-11-07 16:40:41,715 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2024-11-07 16:40:41,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-07 16:40:41,812 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 34 treesize of output 25 [2024-11-07 16:40:41,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:41,866 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 25 treesize of output 21 [2024-11-07 16:40:42,076 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 16:40:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:42,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:42,350 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1445 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~ret9#1.base| v_ArrVal_1445) |c_ULTIMATE.start_main_~shared~0#1.base|) 0) |c_ULTIMATE.start_main_~shared~0#1.base|))) (forall ((v_ArrVal_1445 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~ret9#1.base| v_ArrVal_1445) |c_ULTIMATE.start_main_~shared~0#1.base|) 0)) 1))) is different from false [2024-11-07 16:40:42,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190023929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:42,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:42,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 43 [2024-11-07 16:40:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876218937] [2024-11-07 16:40:42,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:42,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-07 16:40:42,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:42,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-07 16:40:42,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2296, Unknown=17, NotChecked=96, Total=2550 [2024-11-07 16:40:42,453 INFO L87 Difference]: Start difference. First operand 188 states and 228 transitions. Second operand has 44 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 35 states have internal predecessors, (74), 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 16:40:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:43,384 INFO L93 Difference]: Finished difference Result 198 states and 242 transitions. [2024-11-07 16:40:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 16:40:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 35 states have internal predecessors, (74), 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 46 [2024-11-07 16:40:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:43,385 INFO L225 Difference]: With dead ends: 198 [2024-11-07 16:40:43,385 INFO L226 Difference]: Without dead ends: 198 [2024-11-07 16:40:43,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=246, Invalid=3772, Unknown=18, NotChecked=124, Total=4160 [2024-11-07 16:40:43,386 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 41 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:43,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1178 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-07 16:40:43,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-07 16:40:43,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2024-11-07 16:40:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 167 states have (on average 1.281437125748503) internal successors, (214), 179 states have internal predecessors, (214), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 16:40:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 234 transitions. [2024-11-07 16:40:43,391 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 234 transitions. Word has length 46 [2024-11-07 16:40:43,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:43,391 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 234 transitions. [2024-11-07 16:40:43,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 35 states have internal predecessors, (74), 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 16:40:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 234 transitions. [2024-11-07 16:40:43,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-07 16:40:43,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:43,392 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, 1, 1, 1] [2024-11-07 16:40:43,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-07 16:40:43,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-07 16:40:43,596 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:43,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1244265855, now seen corresponding path program 1 times [2024-11-07 16:40:43,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:43,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844856669] [2024-11-07 16:40:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:43,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:44,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:44,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:40:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:44,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 16:40:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:44,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844856669] [2024-11-07 16:40:44,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844856669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942271922] [2024-11-07 16:40:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:44,403 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 16:40:44,406 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 16:40:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:44,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-07 16:40:44,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:44,680 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 16:40:44,763 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 16:40:44,765 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 16:40:45,107 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:45,107 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 16:40:45,113 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 16:40:45,129 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-07 16:40:45,130 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 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-07 16:40:45,136 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 16:40:45,227 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 16:40:45,233 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 16:40:45,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:45,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 15 [2024-11-07 16:40:45,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:45,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 17 [2024-11-07 16:40:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:45,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:45,813 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1548 (Array Int Int)) (v_ArrVal_1547 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~1#1.base| v_ArrVal_1548) |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~1#1.base| v_ArrVal_1547) |c_ULTIMATE.start_main_~shared~0#1.base|) 0)))) (forall ((v_ArrVal_1548 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~1#1.base| v_ArrVal_1548) |c_ULTIMATE.start_main_~shared~0#1.base|) 0)))) is different from false [2024-11-07 16:40:45,818 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1548 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~ret9#1.base| v_ArrVal_1548) |c_ULTIMATE.start_main_~shared~0#1.base|) 0))) (forall ((v_ArrVal_1548 (Array Int Int)) (v_ArrVal_1547 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~ret9#1.base| v_ArrVal_1548) |c_ULTIMATE.start_main_~shared~0#1.base|) 0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~ret9#1.base| v_ArrVal_1547) |c_ULTIMATE.start_main_~shared~0#1.base|) 0))))) is different from false [2024-11-07 16:40:45,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942271922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:45,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:45,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 42 [2024-11-07 16:40:45,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978064235] [2024-11-07 16:40:45,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:45,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-07 16:40:45,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:45,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-07 16:40:45,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2315, Unknown=2, NotChecked=194, Total=2652 [2024-11-07 16:40:45,981 INFO L87 Difference]: Start difference. First operand 192 states and 234 transitions. Second operand has 43 states, 40 states have (on average 1.95) internal successors, (78), 37 states have internal predecessors, (78), 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 16:40:47,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:47,192 INFO L93 Difference]: Finished difference Result 196 states and 239 transitions. [2024-11-07 16:40:47,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 16:40:47,193 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 1.95) internal successors, (78), 37 states have internal predecessors, (78), 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 46 [2024-11-07 16:40:47,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:47,194 INFO L225 Difference]: With dead ends: 196 [2024-11-07 16:40:47,194 INFO L226 Difference]: Without dead ends: 196 [2024-11-07 16:40:47,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=229, Invalid=3683, Unknown=2, NotChecked=246, Total=4160 [2024-11-07 16:40:47,195 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 24 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:47,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1807 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 16:40:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-07 16:40:47,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2024-11-07 16:40:47,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 169 states have (on average 1.272189349112426) internal successors, (215), 181 states have internal predecessors, (215), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 16:40:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 235 transitions. [2024-11-07 16:40:47,200 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 235 transitions. Word has length 46 [2024-11-07 16:40:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:47,200 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 235 transitions. [2024-11-07 16:40:47,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 1.95) internal successors, (78), 37 states have internal predecessors, (78), 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 16:40:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 235 transitions. [2024-11-07 16:40:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:40:47,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:47,201 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:47,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-07 16:40:47,405 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,SelfDestructingSolverStorable28 [2024-11-07 16:40:47,405 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:47,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash -407674692, now seen corresponding path program 1 times [2024-11-07 16:40:47,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:47,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558328824] [2024-11-07 16:40:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:47,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:47,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:47,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:47,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:47,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-07 16:40:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:40:47,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:47,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558328824] [2024-11-07 16:40:47,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558328824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:47,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534433301] [2024-11-07 16:40:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:47,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:47,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:47,772 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 16:40:47,774 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 16:40:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:47,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 16:40:47,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:47,960 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:47,960 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 16:40:47,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 16:40:48,012 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:40:48,012 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-07 16:40:48,022 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 25 treesize of output 13 [2024-11-07 16:40:48,034 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 16:40:48,062 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-07 16:40:48,062 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 16:40:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 5 not checked. [2024-11-07 16:40:48,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:48,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534433301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:48,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:48,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22 [2024-11-07 16:40:48,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832629176] [2024-11-07 16:40:48,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:48,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 16:40:48,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 16:40:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=449, Unknown=1, NotChecked=42, Total=552 [2024-11-07 16:40:48,102 INFO L87 Difference]: Start difference. First operand 194 states and 235 transitions. Second operand has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 18 states have internal predecessors, (62), 2 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-07 16:40:48,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:48,332 INFO L93 Difference]: Finished difference Result 193 states and 233 transitions. [2024-11-07 16:40:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:40:48,333 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 18 states have internal predecessors, (62), 2 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2024-11-07 16:40:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:48,334 INFO L225 Difference]: With dead ends: 193 [2024-11-07 16:40:48,334 INFO L226 Difference]: Without dead ends: 193 [2024-11-07 16:40:48,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=663, Unknown=1, NotChecked=52, Total=812 [2024-11-07 16:40:48,335 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 11 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:48,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 613 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 420 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2024-11-07 16:40:48,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-07 16:40:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-07 16:40:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 169 states have (on average 1.2603550295857988) internal successors, (213), 180 states have internal predecessors, (213), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 16:40:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 233 transitions. [2024-11-07 16:40:48,340 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 233 transitions. Word has length 48 [2024-11-07 16:40:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:48,340 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 233 transitions. [2024-11-07 16:40:48,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 18 states have internal predecessors, (62), 2 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-07 16:40:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 233 transitions. [2024-11-07 16:40:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:40:48,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:48,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:48,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-07 16:40:48,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:48,545 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:48,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:48,545 INFO L85 PathProgramCache]: Analyzing trace with hash -407674691, now seen corresponding path program 1 times [2024-11-07 16:40:48,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:48,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838790614] [2024-11-07 16:40:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:48,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:48,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:48,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:49,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-07 16:40:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:40:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:49,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838790614] [2024-11-07 16:40:49,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838790614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:49,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900526201] [2024-11-07 16:40:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:49,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:49,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:49,090 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 16:40:49,092 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 16:40:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:49,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-07 16:40:49,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:49,320 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 16:40:49,389 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:49,389 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 16:40:49,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 16:40:49,418 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 16:40:49,474 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:40:49,474 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2024-11-07 16:40:49,480 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 24 treesize of output 11 [2024-11-07 16:40:49,520 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 34 treesize of output 18 [2024-11-07 16:40:49,524 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 7 treesize of output 3 [2024-11-07 16:40:49,597 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 16:40:49,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:49,613 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 16:40:49,618 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:49,619 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 16:40:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-07 16:40:49,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:49,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900526201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:49,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:49,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 31 [2024-11-07 16:40:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750188217] [2024-11-07 16:40:49,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:49,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 16:40:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 16:40:49,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=961, Unknown=1, NotChecked=62, Total=1122 [2024-11-07 16:40:49,731 INFO L87 Difference]: Start difference. First operand 193 states and 233 transitions. Second operand has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 24 states have internal predecessors, (70), 5 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-07 16:40:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:50,232 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2024-11-07 16:40:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 16:40:50,233 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 24 states have internal predecessors, (70), 5 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 48 [2024-11-07 16:40:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:50,234 INFO L225 Difference]: With dead ends: 190 [2024-11-07 16:40:50,234 INFO L226 Difference]: Without dead ends: 190 [2024-11-07 16:40:50,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=1684, Unknown=1, NotChecked=84, Total=1980 [2024-11-07 16:40:50,235 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 25 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:50,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 962 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 721 Invalid, 0 Unknown, 76 Unchecked, 0.3s Time] [2024-11-07 16:40:50,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-07 16:40:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-07 16:40:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 169 states have (on average 1.2248520710059172) internal successors, (207), 177 states have internal predecessors, (207), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 16:40:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 227 transitions. [2024-11-07 16:40:50,240 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 227 transitions. Word has length 48 [2024-11-07 16:40:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:50,240 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 227 transitions. [2024-11-07 16:40:50,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 24 states have internal predecessors, (70), 5 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-07 16:40:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 227 transitions. [2024-11-07 16:40:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-07 16:40:50,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:50,241 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-07 16:40:50,258 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 16:40:50,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:50,446 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:50,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1938673338, now seen corresponding path program 1 times [2024-11-07 16:40:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:50,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114190245] [2024-11-07 16:40:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:50,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:50,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:50,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:40:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:50,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 16:40:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:50,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114190245] [2024-11-07 16:40:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114190245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742507041] [2024-11-07 16:40:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:50,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:50,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:50,822 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 16:40:50,823 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 16:40:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:50,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-07 16:40:50,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:51,090 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 16:40:51,196 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 9 treesize of output 5 [2024-11-07 16:40:51,254 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:51,255 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 16:40:51,319 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 16:40:51,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:51,378 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 17 treesize of output 17 [2024-11-07 16:40:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:51,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:51,630 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1929 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~ret9#1.base| v_ArrVal_1929) |c_ULTIMATE.start_main_~shared~0#1.base|) 0) |c_#StackHeapBarrier|)) is different from false [2024-11-07 16:40:51,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742507041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:51,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:51,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23] total 35 [2024-11-07 16:40:51,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645746820] [2024-11-07 16:40:51,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:51,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 16:40:51,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:51,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 16:40:51,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1453, Unknown=14, NotChecked=76, Total=1640 [2024-11-07 16:40:51,697 INFO L87 Difference]: Start difference. First operand 190 states and 227 transitions. Second operand has 36 states, 33 states have (on average 2.121212121212121) internal successors, (70), 29 states have internal predecessors, (70), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:40:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:52,532 INFO L93 Difference]: Finished difference Result 193 states and 232 transitions. [2024-11-07 16:40:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 16:40:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.121212121212121) internal successors, (70), 29 states have internal predecessors, (70), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 49 [2024-11-07 16:40:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:52,533 INFO L225 Difference]: With dead ends: 193 [2024-11-07 16:40:52,533 INFO L226 Difference]: Without dead ends: 193 [2024-11-07 16:40:52,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=2774, Unknown=14, NotChecked=106, Total=3080 [2024-11-07 16:40:52,535 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 21 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:52,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1439 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 16:40:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-07 16:40:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2024-11-07 16:40:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 170 states have (on average 1.223529411764706) internal successors, (208), 178 states have internal predecessors, (208), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 16:40:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 228 transitions. [2024-11-07 16:40:52,542 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 228 transitions. Word has length 49 [2024-11-07 16:40:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:52,542 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 228 transitions. [2024-11-07 16:40:52,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.121212121212121) internal successors, (70), 29 states have internal predecessors, (70), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:40:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 228 transitions. [2024-11-07 16:40:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-07 16:40:52,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:52,543 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, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:52,560 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 16:40:52,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:52,744 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:52,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 24977884, now seen corresponding path program 1 times [2024-11-07 16:40:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:52,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564881732] [2024-11-07 16:40:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:53,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:53,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:53,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:53,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:53,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564881732] [2024-11-07 16:40:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564881732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:53,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951107680] [2024-11-07 16:40:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:53,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:53,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:53,920 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 16:40:53,921 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 16:40:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:54,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-07 16:40:54,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:54,103 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 16:40:54,140 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 16:40:54,144 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 16:40:54,555 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:40:54,555 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 16:40:54,570 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-07 16:40:54,570 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 16:40:54,576 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 16:40:54,653 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 16:40:54,656 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 16:40:54,768 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:54,768 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 16:40:54,829 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 23 treesize of output 11 [2024-11-07 16:40:54,835 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 16:40:54,947 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-07 16:40:54,947 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 52 [2024-11-07 16:40:54,952 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 20 treesize of output 11 [2024-11-07 16:40:54,961 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 12 treesize of output 8 [2024-11-07 16:40:55,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:55,058 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 16:40:55,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:55,065 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 16:40:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:55,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:55,369 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~1#1.base|) |c_ULTIMATE.start_create_~now~1#1.offset|))) (and (forall ((v_ArrVal_2057 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_2057) |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0)) (forall ((v_ArrVal_2058 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_2058) |c_ULTIMATE.start_main_~shared~0#1.base|) 0) 0)))) is different from false [2024-11-07 16:40:55,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951107680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:55,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:55,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 46 [2024-11-07 16:40:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673666192] [2024-11-07 16:40:55,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:55,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-07 16:40:55,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:55,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-07 16:40:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2353, Unknown=59, NotChecked=98, Total=2652 [2024-11-07 16:40:55,684 INFO L87 Difference]: Start difference. First operand 191 states and 228 transitions. Second operand has 46 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 38 states have internal predecessors, (78), 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 16:40:56,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:56,849 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2024-11-07 16:40:56,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 16:40:56,850 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 38 states have internal predecessors, (78), 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 50 [2024-11-07 16:40:56,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:56,851 INFO L225 Difference]: With dead ends: 196 [2024-11-07 16:40:56,851 INFO L226 Difference]: Without dead ends: 196 [2024-11-07 16:40:56,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=262, Invalid=3963, Unknown=69, NotChecked=128, Total=4422 [2024-11-07 16:40:56,852 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 38 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:56,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1109 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-07 16:40:56,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-07 16:40:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2024-11-07 16:40:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 173 states have (on average 1.2196531791907514) internal successors, (211), 181 states have internal predecessors, (211), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-07 16:40:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 231 transitions. [2024-11-07 16:40:56,857 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 231 transitions. Word has length 50 [2024-11-07 16:40:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:56,858 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 231 transitions. [2024-11-07 16:40:56,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 38 states have internal predecessors, (78), 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 16:40:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 231 transitions. [2024-11-07 16:40:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-07 16:40:56,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:56,859 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-11-07 16:40:56,876 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 16:40:57,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:57,064 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:57,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash -395164942, now seen corresponding path program 2 times [2024-11-07 16:40:57,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:57,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644815707] [2024-11-07 16:40:57,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:57,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:57,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:57,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:40:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:57,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:40:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:57,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-07 16:40:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:40:57,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:57,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644815707] [2024-11-07 16:40:57,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644815707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:57,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477292178] [2024-11-07 16:40:57,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:40:57,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:57,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:57,454 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 16:40:57,455 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 16:40:57,626 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:40:57,626 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:40:57,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-07 16:40:57,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:57,633 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 16:40:57,635 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 16:40:57,780 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:40:57,781 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 16:40:57,794 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:57,794 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 16:40:57,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 16:40:57,874 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 16 treesize of output 8 [2024-11-07 16:40:57,951 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 16:40:57,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:57,967 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 21 treesize of output 14 [2024-11-07 16:40:57,976 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:57,976 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 16:40:58,134 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:40:58,135 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 21 treesize of output 18 [2024-11-07 16:40:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 8 not checked. [2024-11-07 16:40:58,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:58,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477292178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:58,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:58,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 35 [2024-11-07 16:40:58,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132280421] [2024-11-07 16:40:58,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:58,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 16:40:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 16:40:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1285, Unknown=1, NotChecked=72, Total=1482 [2024-11-07 16:40:58,451 INFO L87 Difference]: Start difference. First operand 194 states and 231 transitions. Second operand has 36 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 29 states have internal predecessors, (83), 7 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:40:59,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:59,090 INFO L93 Difference]: Finished difference Result 247 states and 293 transitions. [2024-11-07 16:40:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 16:40:59,091 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 29 states have internal predecessors, (83), 7 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 52 [2024-11-07 16:40:59,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:59,092 INFO L225 Difference]: With dead ends: 247 [2024-11-07 16:40:59,092 INFO L226 Difference]: Without dead ends: 247 [2024-11-07 16:40:59,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=1824, Unknown=1, NotChecked=86, Total=2070 [2024-11-07 16:40:59,093 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 28 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:59,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1048 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 909 Invalid, 0 Unknown, 113 Unchecked, 0.5s Time] [2024-11-07 16:40:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-07 16:40:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 230. [2024-11-07 16:40:59,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 206 states have (on average 1.1990291262135921) internal successors, (247), 214 states have internal predecessors, (247), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 16:40:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 273 transitions. [2024-11-07 16:40:59,100 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 273 transitions. Word has length 52 [2024-11-07 16:40:59,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:59,100 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 273 transitions. [2024-11-07 16:40:59,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 29 states have internal predecessors, (83), 7 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:40:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 273 transitions. [2024-11-07 16:40:59,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-07 16:40:59,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:59,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:59,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-07 16:40:59,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:59,302 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:40:59,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:59,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1766101875, now seen corresponding path program 1 times [2024-11-07 16:40:59,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:59,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136843880] [2024-11-07 16:40:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:59,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:59,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:59,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:40:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:59,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:40:59,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:59,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136843880] [2024-11-07 16:40:59,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136843880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:59,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085670854] [2024-11-07 16:40:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:59,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:59,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:59,488 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 16:40:59,489 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 16:40:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:59,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 16:40:59,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:59,777 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 16:40:59,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:59,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:59,831 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 16:40:59,892 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 16:40:59,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085670854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:59,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:59,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 17 [2024-11-07 16:40:59,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219385341] [2024-11-07 16:40:59,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:59,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 16:40:59,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:59,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 16:40:59,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:40:59,894 INFO L87 Difference]: Start difference. First operand 230 states and 273 transitions. Second operand has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 16 states have internal predecessors, (78), 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 16:41:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:41:00,053 INFO L93 Difference]: Finished difference Result 247 states and 293 transitions. [2024-11-07 16:41:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 16:41:00,054 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 16 states have internal predecessors, (78), 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 52 [2024-11-07 16:41:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:41:00,055 INFO L225 Difference]: With dead ends: 247 [2024-11-07 16:41:00,055 INFO L226 Difference]: Without dead ends: 247 [2024-11-07 16:41:00,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 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 16:41:00,056 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 21 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:41:00,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 530 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:41:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-07 16:41:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 241. [2024-11-07 16:41:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 217 states have (on average 1.2119815668202765) internal successors, (263), 225 states have internal predecessors, (263), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 16:41:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 289 transitions. [2024-11-07 16:41:00,066 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 289 transitions. Word has length 52 [2024-11-07 16:41:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:41:00,066 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 289 transitions. [2024-11-07 16:41:00,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 16 states have internal predecessors, (78), 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 16:41:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 289 transitions. [2024-11-07 16:41:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-07 16:41:00,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:41:00,067 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:41:00,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-07 16:41:00,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:41:00,268 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:41:00,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:41:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 592305861, now seen corresponding path program 2 times [2024-11-07 16:41:00,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:41:00,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658121203] [2024-11-07 16:41:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:00,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:41:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:00,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:41:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:00,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:41:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:00,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 16:41:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:41:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:41:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658121203] [2024-11-07 16:41:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658121203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451563870] [2024-11-07 16:41:01,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:41:01,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:41:01,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:41:01,110 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 16:41:01,111 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 16:41:01,284 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:41:01,284 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:41:01,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-07 16:41:01,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:41:01,295 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 16:41:01,408 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 16:41:01,413 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 16:41:01,514 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-07 16:41:01,514 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 16:41:01,572 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 20 treesize of output 15 [2024-11-07 16:41:01,577 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 16:41:01,995 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2024-11-07 16:41:01,995 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 16:41:02,208 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-07 16:41:02,208 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 47 treesize of output 42 [2024-11-07 16:41:02,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-07 16:41:02,897 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 16:41:02,898 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 16:41:02,918 INFO L349 Elim1Store]: treesize reduction 44, result has 21.4 percent of original size [2024-11-07 16:41:02,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 42 [2024-11-07 16:41:02,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:02,928 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 16:41:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:41:03,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:41:03,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451563870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:03,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:41:03,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 49 [2024-11-07 16:41:03,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862846519] [2024-11-07 16:41:03,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:41:03,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-07 16:41:03,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:41:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-07 16:41:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=3253, Unknown=3, NotChecked=0, Total=3422 [2024-11-07 16:41:03,744 INFO L87 Difference]: Start difference. First operand 241 states and 289 transitions. Second operand has 49 states, 47 states have (on average 1.702127659574468) internal successors, (80), 41 states have internal predecessors, (80), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-07 16:41:05,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:41:05,527 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2024-11-07 16:41:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-07 16:41:05,528 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 1.702127659574468) internal successors, (80), 41 states have internal predecessors, (80), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 52 [2024-11-07 16:41:05,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:41:05,529 INFO L225 Difference]: With dead ends: 244 [2024-11-07 16:41:05,529 INFO L226 Difference]: Without dead ends: 244 [2024-11-07 16:41:05,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=259, Invalid=4850, Unknown=3, NotChecked=0, Total=5112 [2024-11-07 16:41:05,530 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 20 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:41:05,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1731 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-07 16:41:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-07 16:41:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2024-11-07 16:41:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 219 states have (on average 1.2100456621004567) internal successors, (265), 227 states have internal predecessors, (265), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 16:41:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 291 transitions. [2024-11-07 16:41:05,537 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 291 transitions. Word has length 52 [2024-11-07 16:41:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:41:05,538 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 291 transitions. [2024-11-07 16:41:05,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 1.702127659574468) internal successors, (80), 41 states have internal predecessors, (80), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-07 16:41:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 291 transitions. [2024-11-07 16:41:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-07 16:41:05,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:41:05,539 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:41:05,557 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 16:41:05,739 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,SelfDestructingSolverStorable35 [2024-11-07 16:41:05,739 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:41:05,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:41:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2024762571, now seen corresponding path program 1 times [2024-11-07 16:41:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:41:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195561398] [2024-11-07 16:41:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:41:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:06,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:41:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:06,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:41:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:06,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 16:41:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:41:06,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:41:06,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195561398] [2024-11-07 16:41:06,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195561398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:06,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718887932] [2024-11-07 16:41:06,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:06,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:41:06,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:41:06,232 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 16:41:06,232 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 16:41:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:06,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-07 16:41:06,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:41:06,491 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 16:41:06,525 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 16:41:06,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:41:06,709 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 16:41:06,724 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-11-07 16:41:06,724 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 16:41:06,870 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 17 treesize of output 12 [2024-11-07 16:41:07,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:07,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 16 [2024-11-07 16:41:07,133 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 16:41:07,153 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 16:41:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:41:07,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:41:07,383 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:07,383 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 28 treesize of output 32 [2024-11-07 16:41:07,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718887932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:07,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:41:07,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26] total 41 [2024-11-07 16:41:07,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044193988] [2024-11-07 16:41:07,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:41:07,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-07 16:41:07,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:41:07,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-07 16:41:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2042, Unknown=0, NotChecked=0, Total=2162 [2024-11-07 16:41:07,604 INFO L87 Difference]: Start difference. First operand 243 states and 291 transitions. Second operand has 42 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 35 states have internal predecessors, (79), 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 16:41:08,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:41:08,679 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2024-11-07 16:41:08,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 16:41:08,679 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 35 states have internal predecessors, (79), 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 54 [2024-11-07 16:41:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:41:08,680 INFO L225 Difference]: With dead ends: 250 [2024-11-07 16:41:08,681 INFO L226 Difference]: Without dead ends: 250 [2024-11-07 16:41:08,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=216, Invalid=3690, Unknown=0, NotChecked=0, Total=3906 [2024-11-07 16:41:08,681 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 24 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 16:41:08,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1538 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 16:41:08,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-07 16:41:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 243. [2024-11-07 16:41:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 219 states have (on average 1.2100456621004567) internal successors, (265), 227 states have internal predecessors, (265), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 16:41:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 291 transitions. [2024-11-07 16:41:08,686 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 291 transitions. Word has length 54 [2024-11-07 16:41:08,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:41:08,686 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 291 transitions. [2024-11-07 16:41:08,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 35 states have internal predecessors, (79), 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 16:41:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 291 transitions. [2024-11-07 16:41:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-07 16:41:08,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:41:08,687 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, 1, 1] [2024-11-07 16:41:08,703 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 16:41:08,887 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,SelfDestructingSolverStorable36 [2024-11-07 16:41:08,887 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:41:08,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:41:08,888 INFO L85 PathProgramCache]: Analyzing trace with hash -17256456, now seen corresponding path program 1 times [2024-11-07 16:41:08,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:41:08,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84933141] [2024-11-07 16:41:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:08,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:41:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:09,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:41:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:09,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:41:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:09,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 16:41:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:41:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:41:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84933141] [2024-11-07 16:41:09,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84933141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013869396] [2024-11-07 16:41:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:09,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:41:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:41:09,305 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 16:41:09,307 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 16:41:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:09,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-07 16:41:09,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:41:09,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 16:41:09,785 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:41:09,785 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 17 treesize of output 16 [2024-11-07 16:41:09,845 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:41:09,845 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 21 treesize of output 20 [2024-11-07 16:41:09,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:09,940 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 20 treesize of output 20 [2024-11-07 16:41:10,039 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 16:41:10,131 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 16:41:10,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:41:10,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-07 16:41:10,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013869396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:10,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:41:10,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26] total 43 [2024-11-07 16:41:10,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414160373] [2024-11-07 16:41:10,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:41:10,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-07 16:41:10,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:41:10,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-07 16:41:10,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2309, Unknown=4, NotChecked=0, Total=2450 [2024-11-07 16:41:10,488 INFO L87 Difference]: Start difference. First operand 243 states and 291 transitions. Second operand has 43 states, 41 states have (on average 2.097560975609756) internal successors, (86), 37 states have internal predecessors, (86), 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 16:41:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:41:11,464 INFO L93 Difference]: Finished difference Result 244 states and 292 transitions. [2024-11-07 16:41:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 16:41:11,465 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.097560975609756) internal successors, (86), 37 states have internal predecessors, (86), 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 55 [2024-11-07 16:41:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:41:11,466 INFO L225 Difference]: With dead ends: 244 [2024-11-07 16:41:11,466 INFO L226 Difference]: Without dead ends: 244 [2024-11-07 16:41:11,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=254, Invalid=4164, Unknown=4, NotChecked=0, Total=4422 [2024-11-07 16:41:11,466 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 46 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:41:11,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1881 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 16:41:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-07 16:41:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2024-11-07 16:41:11,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 219 states have (on average 1.2054794520547945) internal successors, (264), 227 states have internal predecessors, (264), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 16:41:11,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 290 transitions. [2024-11-07 16:41:11,471 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 290 transitions. Word has length 55 [2024-11-07 16:41:11,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:41:11,471 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 290 transitions. [2024-11-07 16:41:11,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.097560975609756) internal successors, (86), 37 states have internal predecessors, (86), 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 16:41:11,471 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 290 transitions. [2024-11-07 16:41:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-07 16:41:11,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:41:11,472 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, 1, 1, 1] [2024-11-07 16:41:11,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-07 16:41:11,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-07 16:41:11,672 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:41:11,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:41:11,673 INFO L85 PathProgramCache]: Analyzing trace with hash -648395146, now seen corresponding path program 3 times [2024-11-07 16:41:11,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:41:11,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541185632] [2024-11-07 16:41:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:41:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:12,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:41:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:12,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:41:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:12,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:41:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:12,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-07 16:41:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:41:12,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:41:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541185632] [2024-11-07 16:41:12,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541185632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699475484] [2024-11-07 16:41:12,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:41:12,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:41:12,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:41:12,455 INFO L229 MonitoredProcess]: Starting monitored process 25 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 16:41:12,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-07 16:41:12,662 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 16:41:12,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:41:12,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-07 16:41:12,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:41:12,668 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 16:41:12,758 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:41:12,758 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 16:41:12,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 16:41:12,931 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (select |c_#valid| alloc_and_zero_internal_~pi~1.base))) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#memory_$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))))) is different from true [2024-11-07 16:41:12,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:41:12,944 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 24 treesize of output 17 [2024-11-07 16:41:12,956 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-07 16:41:12,956 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 16:41:12,969 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:41:12,969 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-07 16:41:13,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:41:13,197 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 26 treesize of output 19 [2024-11-07 16:41:13,226 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2024-11-07 16:41:13,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2024-11-07 16:41:13,321 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 34 treesize of output 25 [2024-11-07 16:41:13,480 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 33 treesize of output 17 [2024-11-07 16:41:13,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-07 16:41:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-07 16:41:13,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:41:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699475484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:14,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:41:14,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 51 [2024-11-07 16:41:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931108171] [2024-11-07 16:41:14,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:41:14,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-07 16:41:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:41:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-07 16:41:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=3103, Unknown=3, NotChecked=112, Total=3422 [2024-11-07 16:41:14,129 INFO L87 Difference]: Start difference. First operand 243 states and 290 transitions. Second operand has 52 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 44 states have internal predecessors, (93), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:41:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:41:15,327 INFO L93 Difference]: Finished difference Result 259 states and 311 transitions. [2024-11-07 16:41:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-07 16:41:15,327 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 44 states have internal predecessors, (93), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 58 [2024-11-07 16:41:15,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:41:15,328 INFO L225 Difference]: With dead ends: 259 [2024-11-07 16:41:15,328 INFO L226 Difference]: Without dead ends: 259 [2024-11-07 16:41:15,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=256, Invalid=3905, Unknown=3, NotChecked=126, Total=4290 [2024-11-07 16:41:15,329 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 35 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 2197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:41:15,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1602 Invalid, 2197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2053 Invalid, 0 Unknown, 124 Unchecked, 1.0s Time] [2024-11-07 16:41:15,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-07 16:41:15,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 247. [2024-11-07 16:41:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 223 states have (on average 1.210762331838565) internal successors, (270), 231 states have internal predecessors, (270), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 16:41:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 296 transitions. [2024-11-07 16:41:15,338 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 296 transitions. Word has length 58 [2024-11-07 16:41:15,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:41:15,338 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 296 transitions. [2024-11-07 16:41:15,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 44 states have internal predecessors, (93), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:41:15,338 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 296 transitions. [2024-11-07 16:41:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-07 16:41:15,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:41:15,339 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, 1, 1, 1] [2024-11-07 16:41:15,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-07 16:41:15,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-07 16:41:15,540 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:41:15,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:41:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash -648395145, now seen corresponding path program 2 times [2024-11-07 16:41:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:41:15,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453418228] [2024-11-07 16:41:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:15,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:41:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:16,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:41:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:16,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:41:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:16,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:41:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:17,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-07 16:41:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:41:17,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:41:17,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453418228] [2024-11-07 16:41:17,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453418228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:17,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43121723] [2024-11-07 16:41:17,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:41:17,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:41:17,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:41:17,299 INFO L229 MonitoredProcess]: Starting monitored process 26 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 16:41:17,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-07 16:41:17,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:41:17,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:41:17,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-07 16:41:17,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:41:17,516 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 16:41:17,743 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:41:17,743 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 16:41:17,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 16:41:17,786 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 16:41:18,011 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (select |c_#valid| alloc_and_zero_internal_~pi~1.base))) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#memory_$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 16:41:18,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:41:18,029 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 24 treesize of output 17 [2024-11-07 16:41:18,041 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-07 16:41:18,042 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 16:41:18,045 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 16:41:18,061 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:41:18,061 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2024-11-07 16:41:18,066 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 24 treesize of output 11 [2024-11-07 16:41:18,446 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:41:18,446 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 16:41:18,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-07 16:41:18,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:41:18,455 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 35 treesize of output 26 [2024-11-07 16:41:18,466 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2024-11-07 16:41:18,466 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 16:41:18,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 16:41:18,571 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 34 treesize of output 25 [2024-11-07 16:41:18,576 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 16:41:18,682 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 25 treesize of output 13 [2024-11-07 16:41:18,685 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 7 treesize of output 3 [2024-11-07 16:41:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-07 16:41:18,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:41:19,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43121723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:19,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:41:19,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30] total 61 [2024-11-07 16:41:19,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070385162] [2024-11-07 16:41:19,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:41:19,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-07 16:41:19,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:41:19,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-07 16:41:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=4619, Unknown=3, NotChecked=136, Total=4970 [2024-11-07 16:41:19,496 INFO L87 Difference]: Start difference. First operand 247 states and 296 transitions. Second operand has 62 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 52 states have internal predecessors, (98), 7 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:41:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:41:21,290 INFO L93 Difference]: Finished difference Result 251 states and 300 transitions. [2024-11-07 16:41:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 16:41:21,291 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 52 states have internal predecessors, (98), 7 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 58 [2024-11-07 16:41:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:41:21,292 INFO L225 Difference]: With dead ends: 251 [2024-11-07 16:41:21,292 INFO L226 Difference]: Without dead ends: 251 [2024-11-07 16:41:21,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=326, Invalid=6815, Unknown=3, NotChecked=166, Total=7310 [2024-11-07 16:41:21,293 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 22 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:41:21,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1976 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2054 Invalid, 0 Unknown, 115 Unchecked, 1.0s Time] [2024-11-07 16:41:21,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-07 16:41:21,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2024-11-07 16:41:21,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 225 states have (on average 1.2044444444444444) internal successors, (271), 233 states have internal predecessors, (271), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 16:41:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 297 transitions. [2024-11-07 16:41:21,298 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 297 transitions. Word has length 58 [2024-11-07 16:41:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:41:21,298 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 297 transitions. [2024-11-07 16:41:21,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 52 states have internal predecessors, (98), 7 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:41:21,299 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 297 transitions. [2024-11-07 16:41:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-07 16:41:21,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:41:21,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:41:21,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-07 16:41:21,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-07 16:41:21,500 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:41:21,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:41:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash -61542287, now seen corresponding path program 1 times [2024-11-07 16:41:21,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:41:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40366588] [2024-11-07 16:41:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:21,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:41:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:21,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:41:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:21,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:41:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:22,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:41:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:41:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:41:22,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40366588] [2024-11-07 16:41:22,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40366588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:22,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317689592] [2024-11-07 16:41:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:22,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:41:22,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:41:22,156 INFO L229 MonitoredProcess]: Starting monitored process 27 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 16:41:22,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-07 16:41:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:22,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-07 16:41:22,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:41:22,369 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 16:41:22,536 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:41:22,537 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 16:41:22,704 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2024-11-07 16:41:22,704 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 22 treesize of output 33 [2024-11-07 16:41:22,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 16:41:22,887 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:41:22,887 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-07 16:41:23,091 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-07 16:41:23,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2024-11-07 16:41:23,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:23,166 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 25 treesize of output 21 [2024-11-07 16:41:23,285 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 16:41:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:41:23,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:41:23,607 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2963 (Array Int Int)) (v_ArrVal_2964 Int)) (= (select (store |c_#valid| |c_ULTIMATE.start_main_~shared~0#1.base| v_ArrVal_2964) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2963) |c_ULTIMATE.start_create_~sll~1#1.base|) 0)) 1)) (forall ((v_ArrVal_2963 (Array Int Int))) (not (= |c_ULTIMATE.start_create_~sll~1#1.base| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_2963) |c_ULTIMATE.start_create_~sll~1#1.base|) 0))))) is different from false [2024-11-07 16:41:23,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:23,700 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 19 treesize of output 20 [2024-11-07 16:41:23,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:23,707 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 33 treesize of output 36 [2024-11-07 16:41:23,709 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 20 treesize of output 18 [2024-11-07 16:41:23,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:23,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 23 treesize of output 24 [2024-11-07 16:41:23,723 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 16:41:23,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-07 16:41:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317689592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:23,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:41:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 48 [2024-11-07 16:41:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322852903] [2024-11-07 16:41:23,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:41:23,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-07 16:41:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:41:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-07 16:41:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3013, Unknown=16, NotChecked=110, Total=3306 [2024-11-07 16:41:23,928 INFO L87 Difference]: Start difference. First operand 249 states and 297 transitions. Second operand has 49 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 41 states have internal predecessors, (95), 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 16:41:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:41:25,146 INFO L93 Difference]: Finished difference Result 271 states and 324 transitions. [2024-11-07 16:41:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 16:41:25,146 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 41 states have internal predecessors, (95), 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 58 [2024-11-07 16:41:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:41:25,147 INFO L225 Difference]: With dead ends: 271 [2024-11-07 16:41:25,147 INFO L226 Difference]: Without dead ends: 271 [2024-11-07 16:41:25,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=307, Invalid=4937, Unknown=16, NotChecked=142, Total=5402 [2024-11-07 16:41:25,148 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 40 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 16:41:25,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 872 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 16:41:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-07 16:41:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 258. [2024-11-07 16:41:25,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 234 states have (on average 1.205128205128205) internal successors, (282), 242 states have internal predecessors, (282), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 16:41:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 308 transitions. [2024-11-07 16:41:25,154 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 308 transitions. Word has length 58 [2024-11-07 16:41:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:41:25,155 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 308 transitions. [2024-11-07 16:41:25,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 41 states have internal predecessors, (95), 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 16:41:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 308 transitions. [2024-11-07 16:41:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-07 16:41:25,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:41:25,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:41:25,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-07 16:41:25,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:41:25,357 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-11-07 16:41:25,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:41:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash -61542286, now seen corresponding path program 1 times [2024-11-07 16:41:25,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:41:25,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153424515] [2024-11-07 16:41:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:25,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:41:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:25,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:41:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:25,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-07 16:41:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:25,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:41:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:41:25,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:41:25,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153424515] [2024-11-07 16:41:25,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153424515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:25,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638121259] [2024-11-07 16:41:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:41:25,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:41:25,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:41:25,841 INFO L229 MonitoredProcess]: Starting monitored process 28 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 16:41:25,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-07 16:41:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:41:26,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-07 16:41:26,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:41:26,170 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 16:41:26,265 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:41:26,266 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 16:41:26,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-07 16:41:26,317 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 16:41:26,415 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:41:26,415 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-07 16:41:26,418 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 24 treesize of output 11 [2024-11-07 16:41:26,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:26,616 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 25 treesize of output 21 [2024-11-07 16:41:26,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:26,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 15 [2024-11-07 16:41:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:41:26,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:41:27,103 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3078 (Array Int Int)) (v_ArrVal_3079 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_3079) |c_ULTIMATE.start_create_~sll~1#1.base|) 0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_3078) |c_ULTIMATE.start_create_~sll~1#1.base|) 0)))) (forall ((v_ArrVal_3079 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem12#1.base| v_ArrVal_3079) |c_ULTIMATE.start_create_~sll~1#1.base|) 0)))) is different from false [2024-11-07 16:41:27,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:27,194 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 16:41:27,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:27,200 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 34 treesize of output 37 [2024-11-07 16:41:27,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:27,217 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 16:41:27,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:27,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 29 treesize of output 30 [2024-11-07 16:41:27,227 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 16:41:27,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-07 16:41:27,232 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 16:41:27,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-07 16:41:27,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638121259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:41:27,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:41:27,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2024-11-07 16:41:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569332974] [2024-11-07 16:41:27,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:41:27,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-07 16:41:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:41:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-07 16:41:27,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2281, Unknown=35, NotChecked=96, Total=2550 [2024-11-07 16:41:27,403 INFO L87 Difference]: Start difference. First operand 258 states and 308 transitions. Second operand has 39 states, 38 states have (on average 2.473684210526316) internal successors, (94), 33 states have internal predecessors, (94), 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)