./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-shared-sll.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.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', '2fa49e67cf70129223df227686710f59267eaca2c9c0899d0fe3cafabfccfe68'] 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.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 2fa49e67cf70129223df227686710f59267eaca2c9c0899d0fe3cafabfccfe68 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 16:40:08,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 16:40:08,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-07 16:40:08,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 16:40:08,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 16:40:08,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 16:40:08,873 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 16:40:08,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 16:40:08,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 16:40:08,873 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 16:40:08,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 16:40:08,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 16:40:08,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 16:40:08,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 16:40:08,874 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 16:40:08,874 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 16:40:08,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 16:40:08,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 16:40:08,875 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 16:40:08,875 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 16:40:08,875 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 16:40:08,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 16:40:08,875 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 16:40:08,875 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 16:40:08,876 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 16:40:08,876 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 16:40:08,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 16:40:08,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 16:40:08,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 16:40:08,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 16:40:08,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:40:08,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 16:40:08,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 16:40:08,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 16:40:08,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 16:40:08,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 16:40:08,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 16:40:08,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 16:40:08,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 16:40:08,877 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 -> 2fa49e67cf70129223df227686710f59267eaca2c9c0899d0fe3cafabfccfe68 [2024-11-07 16:40:09,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 16:40:09,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 16:40:09,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 16:40:09,143 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 16:40:09,144 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 16:40:09,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-shared-sll.i [2024-11-07 16:40:10,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 16:40:10,698 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 16:40:10,698 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-shared-sll.i [2024-11-07 16:40:10,721 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff24bfcfc/4a5bfbaf8b6a4528acc3ca8e6c74e1ec/FLAGf283f9454 [2024-11-07 16:40:10,738 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff24bfcfc/4a5bfbaf8b6a4528acc3ca8e6c74e1ec [2024-11-07 16:40:10,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 16:40:10,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 16:40:10,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 16:40:10,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 16:40:10,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 16:40:10,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:40:10" (1/1) ... [2024-11-07 16:40:10,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d911328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:10, skipping insertion in model container [2024-11-07 16:40:10,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:40:10" (1/1) ... [2024-11-07 16:40:10,794 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 16:40:11,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:40:11,077 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 16:40:11,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:40:11,155 INFO L204 MainTranslator]: Completed translation [2024-11-07 16:40:11,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11 WrapperNode [2024-11-07 16:40:11,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 16:40:11,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 16:40:11,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 16:40:11,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 16:40:11,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,200 INFO L138 Inliner]: procedures = 121, calls = 29, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2024-11-07 16:40:11,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 16:40:11,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 16:40:11,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 16:40:11,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 16:40:11,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,228 INFO L175 MemorySlicer]: Split 14 memory accesses to 1 slices as follows [14]. 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 16:40:11,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,242 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 16:40:11,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 16:40:11,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 16:40:11,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 16:40:11,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (1/1) ... [2024-11-07 16:40:11,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:40:11,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:11,279 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 16:40:11,281 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 16:40:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero_internal [2024-11-07 16:40:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero_internal [2024-11-07 16:40:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-07 16:40:11,300 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-07 16:40:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 16:40:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 16:40:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 16:40:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 16:40:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 16:40:11,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 16:40:11,407 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 16:40:11,409 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 16:40:11,682 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-11-07 16:40:11,682 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 16:40:11,692 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 16:40:11,692 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-07 16:40:11,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:40:11 BoogieIcfgContainer [2024-11-07 16:40:11,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 16:40:11,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 16:40:11,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 16:40:11,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 16:40:11,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:40:10" (1/3) ... [2024-11-07 16:40:11,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ba2a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:40:11, skipping insertion in model container [2024-11-07 16:40:11,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:40:11" (2/3) ... [2024-11-07 16:40:11,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ba2a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:40:11, skipping insertion in model container [2024-11-07 16:40:11,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:40:11" (3/3) ... [2024-11-07 16:40:11,701 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-shared-sll.i [2024-11-07 16:40:11,726 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 16:40:11,726 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2024-11-07 16:40:11,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 16:40:11,773 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;@55d9afb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 16:40:11,773 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-07 16:40:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 56 states have (on average 1.8214285714285714) internal successors, (102), 91 states have internal predecessors, (102), 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 16:40:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-07 16:40:11,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:11,784 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 16:40:11,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:11,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash 37420381, now seen corresponding path program 1 times [2024-11-07 16:40:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346298455] [2024-11-07 16:40:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:11,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:11,967 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 16:40:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346298455] [2024-11-07 16:40:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346298455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:40:11,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301458847] [2024-11-07 16:40:11,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:11,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:40:11,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:11,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:40:11,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:40:11,992 INFO L87 Difference]: Start difference. First operand has 98 states, 56 states have (on average 1.8214285714285714) internal successors, (102), 91 states have internal predecessors, (102), 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 16:40:12,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:12,080 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2024-11-07 16:40:12,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:40:12,082 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 16:40:12,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:12,087 INFO L225 Difference]: With dead ends: 96 [2024-11-07 16:40:12,088 INFO L226 Difference]: Without dead ends: 94 [2024-11-07 16:40:12,090 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 16:40:12,093 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 2 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:12,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 162 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-07 16:40:12,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-07 16:40:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 55 states have (on average 1.690909090909091) internal successors, (93), 87 states have internal predecessors, (93), 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 16:40:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2024-11-07 16:40:12,134 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 5 [2024-11-07 16:40:12,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:12,135 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2024-11-07 16:40:12,135 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 16:40:12,136 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2024-11-07 16:40:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-07 16:40:12,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:12,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 16:40:12,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 16:40:12,137 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:12,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:12,139 INFO L85 PathProgramCache]: Analyzing trace with hash 37420382, now seen corresponding path program 1 times [2024-11-07 16:40:12,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:12,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708984889] [2024-11-07 16:40:12,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:12,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:12,249 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 16:40:12,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708984889] [2024-11-07 16:40:12,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708984889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:12,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:40:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046679495] [2024-11-07 16:40:12,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:12,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:40:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:40:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:40:12,252 INFO L87 Difference]: Start difference. First operand 94 states and 101 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 16:40:12,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:12,317 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2024-11-07 16:40:12,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:40:12,318 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 16:40:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:12,320 INFO L225 Difference]: With dead ends: 92 [2024-11-07 16:40:12,321 INFO L226 Difference]: Without dead ends: 92 [2024-11-07 16:40:12,321 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 16:40:12,322 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:12,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 166 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-07 16:40:12,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-07 16:40:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 55 states have (on average 1.6545454545454545) internal successors, (91), 85 states have internal predecessors, (91), 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 16:40:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2024-11-07 16:40:12,333 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 5 [2024-11-07 16:40:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:12,333 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2024-11-07 16:40:12,333 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 16:40:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2024-11-07 16:40:12,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 16:40:12,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:12,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:12,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 16:40:12,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_and_zero_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:12,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash 986048043, now seen corresponding path program 1 times [2024-11-07 16:40:12,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:12,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52515100] [2024-11-07 16:40:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:12,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:12,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:12,481 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 16:40:12,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:12,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52515100] [2024-11-07 16:40:12,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52515100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:12,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:12,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:40:12,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741899488] [2024-11-07 16:40:12,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:12,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:40:12,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:40:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:40:12,484 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 16:40:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:12,605 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2024-11-07 16:40:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:40:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 13 [2024-11-07 16:40:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:12,607 INFO L225 Difference]: With dead ends: 91 [2024-11-07 16:40:12,608 INFO L226 Difference]: Without dead ends: 91 [2024-11-07 16:40:12,608 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 16:40:12,609 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 1 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:12,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 202 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-07 16:40:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-07 16:40:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.6363636363636365) internal successors, (90), 84 states have internal predecessors, (90), 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 16:40:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2024-11-07 16:40:12,619 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 13 [2024-11-07 16:40:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:12,620 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2024-11-07 16:40:12,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 16:40:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2024-11-07 16:40:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 16:40:12,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:12,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:12,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 16:40:12,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting alloc_and_zero_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:12,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash 986048044, now seen corresponding path program 1 times [2024-11-07 16:40:12,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:12,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552866780] [2024-11-07 16:40:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:12,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:12,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:12,792 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 16:40:12,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:12,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552866780] [2024-11-07 16:40:12,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552866780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:12,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:12,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:40:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630657335] [2024-11-07 16:40:12,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:12,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:40:12,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:12,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:40:12,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:40:12,798 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 16:40:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:12,887 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2024-11-07 16:40:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:40:12,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 13 [2024-11-07 16:40:12,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:12,889 INFO L225 Difference]: With dead ends: 90 [2024-11-07 16:40:12,890 INFO L226 Difference]: Without dead ends: 90 [2024-11-07 16:40:12,891 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 16:40:12,891 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 1 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:12,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 209 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-07 16:40:12,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-07 16:40:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.6181818181818182) internal successors, (89), 83 states have internal predecessors, (89), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:40:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2024-11-07 16:40:12,900 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 13 [2024-11-07 16:40:12,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:12,901 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2024-11-07 16:40:12,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 16:40:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2024-11-07 16:40:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-07 16:40:12,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:12,902 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 16:40:12,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 16:40:12,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:12,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:12,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1864473108, now seen corresponding path program 1 times [2024-11-07 16:40:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:12,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463042385] [2024-11-07 16:40:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:13,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:13,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:13,251 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 16:40:13,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:13,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463042385] [2024-11-07 16:40:13,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463042385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:13,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:13,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 16:40:13,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992369181] [2024-11-07 16:40:13,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:13,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 16:40:13,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:13,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 16:40:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:40:13,252 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 16:40:13,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:13,570 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2024-11-07 16:40:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:40:13,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 22 [2024-11-07 16:40:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:13,572 INFO L225 Difference]: With dead ends: 93 [2024-11-07 16:40:13,572 INFO L226 Difference]: Without dead ends: 93 [2024-11-07 16:40:13,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:40:13,573 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 25 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:13,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 383 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:40:13,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-07 16:40:13,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2024-11-07 16:40:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 83 states have internal predecessors, (91), 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 16:40:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2024-11-07 16:40:13,585 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 22 [2024-11-07 16:40:13,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:13,585 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2024-11-07 16:40:13,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 16:40:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2024-11-07 16:40:13,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-07 16:40:13,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:13,586 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 16:40:13,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 16:40:13,587 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:13,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1864473107, now seen corresponding path program 1 times [2024-11-07 16:40:13,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:13,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867800171] [2024-11-07 16:40:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:13,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:13,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:13,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,075 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 16:40:14,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:14,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867800171] [2024-11-07 16:40:14,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867800171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:14,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:14,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 16:40:14,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623761234] [2024-11-07 16:40:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:14,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 16:40:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:14,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 16:40:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:40:14,079 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 16:40:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:14,428 INFO L93 Difference]: Finished difference Result 110 states and 124 transitions. [2024-11-07 16:40:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:14,428 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 22 [2024-11-07 16:40:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:14,431 INFO L225 Difference]: With dead ends: 110 [2024-11-07 16:40:14,433 INFO L226 Difference]: Without dead ends: 110 [2024-11-07 16:40:14,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:40:14,433 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 27 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:14,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 463 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:40:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-07 16:40:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2024-11-07 16:40:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.5211267605633803) internal successors, (108), 96 states have internal predecessors, (108), 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 16:40:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2024-11-07 16:40:14,445 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 22 [2024-11-07 16:40:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:14,445 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2024-11-07 16:40:14,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 16:40:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2024-11-07 16:40:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-07 16:40:14,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:14,447 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:14,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 16:40:14,447 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:14,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1024663873, now seen corresponding path program 1 times [2024-11-07 16:40:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:14,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531910265] [2024-11-07 16:40:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:14,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-07 16:40:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,661 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 16:40:14,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531910265] [2024-11-07 16:40:14,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531910265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28482231] [2024-11-07 16:40:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:14,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:14,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:14,666 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 16:40:14,668 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 16:40:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:14,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 16:40:14,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:14,809 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 16:40:14,860 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 16:40:14,892 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:40:14,892 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 16:40:14,902 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 16:40:14,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:15,065 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 16:40:15,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28482231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:15,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:15,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 11 [2024-11-07 16:40:15,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479088854] [2024-11-07 16:40:15,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:15,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 16:40:15,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:15,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 16:40:15,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2024-11-07 16:40:15,068 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 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 16:40:15,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:15,302 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2024-11-07 16:40:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:40:15,302 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 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 26 [2024-11-07 16:40:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:15,303 INFO L225 Difference]: With dead ends: 106 [2024-11-07 16:40:15,304 INFO L226 Difference]: Without dead ends: 106 [2024-11-07 16:40:15,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 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 16:40:15,306 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 12 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:15,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 347 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 219 Invalid, 0 Unknown, 98 Unchecked, 0.2s Time] [2024-11-07 16:40:15,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-07 16:40:15,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-07 16:40:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 72 states have (on average 1.5138888888888888) internal successors, (109), 96 states have internal predecessors, (109), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:40:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2024-11-07 16:40:15,316 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 26 [2024-11-07 16:40:15,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:15,316 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2024-11-07 16:40:15,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 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 16:40:15,316 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2024-11-07 16:40:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-07 16:40:15,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:15,317 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:15,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 16:40:15,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:15,518 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:15,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:15,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1024663872, now seen corresponding path program 1 times [2024-11-07 16:40:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:15,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163848463] [2024-11-07 16:40:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:15,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:15,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:15,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:15,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-07 16:40:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:15,844 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 16:40:15,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:15,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163848463] [2024-11-07 16:40:15,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163848463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:15,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151744917] [2024-11-07 16:40:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:15,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:15,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:15,847 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 16:40:15,848 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 16:40:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:15,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 16:40:15,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:15,949 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 16:40:16,072 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base 8) |c_#length|)) is different from true [2024-11-07 16:40:16,098 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:40:16,099 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 16:40:16,121 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 16:40:16,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:16,352 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 16:40:16,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151744917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:16,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:16,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-07 16:40:16,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16545551] [2024-11-07 16:40:16,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:16,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 16:40:16,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:16,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 16:40:16,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2024-11-07 16:40:16,354 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 13 states have internal predecessors, (40), 3 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:40:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:16,623 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2024-11-07 16:40:16,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:40:16,624 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 13 states have internal predecessors, (40), 3 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2024-11-07 16:40:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:16,624 INFO L225 Difference]: With dead ends: 107 [2024-11-07 16:40:16,624 INFO L226 Difference]: Without dead ends: 107 [2024-11-07 16:40:16,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=282, Unknown=1, NotChecked=34, Total=380 [2024-11-07 16:40:16,625 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 13 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:16,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 674 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 318 Invalid, 0 Unknown, 98 Unchecked, 0.2s Time] [2024-11-07 16:40:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-07 16:40:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-11-07 16:40:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 95 states have internal predecessors, (107), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:40:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2024-11-07 16:40:16,635 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 26 [2024-11-07 16:40:16,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:16,635 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2024-11-07 16:40:16,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 13 states have internal predecessors, (40), 3 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:40:16,635 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2024-11-07 16:40:16,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-07 16:40:16,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:16,638 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 16:40:16,655 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 16:40:16,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:16,839 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 32 more)] === [2024-11-07 16:40:16,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:16,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1410291374, now seen corresponding path program 1 times [2024-11-07 16:40:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:16,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642706981] [2024-11-07 16:40:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:16,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:16,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:16,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:16,948 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 16:40:16,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:16,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642706981] [2024-11-07 16:40:16,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642706981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:16,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:16,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:40:16,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635877142] [2024-11-07 16:40:16,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:16,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:40:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:40:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:40:16,950 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:40:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:17,095 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2024-11-07 16:40:17,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:40:17,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-07 16:40:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:17,096 INFO L225 Difference]: With dead ends: 123 [2024-11-07 16:40:17,096 INFO L226 Difference]: Without dead ends: 123 [2024-11-07 16:40:17,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:40:17,096 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 30 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:17,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 327 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-07 16:40:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2024-11-07 16:40:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 84 states have (on average 1.5) internal successors, (126), 107 states have internal predecessors, (126), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:40:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2024-11-07 16:40:17,102 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 28 [2024-11-07 16:40:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:17,102 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2024-11-07 16:40:17,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:40:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2024-11-07 16:40:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-07 16:40:17,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:17,107 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 16:40:17,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 16:40:17,107 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 32 more)] === [2024-11-07 16:40:17,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:17,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1410291373, now seen corresponding path program 1 times [2024-11-07 16:40:17,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:17,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972947666] [2024-11-07 16:40:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:17,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,327 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 16:40:17,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:17,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972947666] [2024-11-07 16:40:17,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972947666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:17,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:17,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:40:17,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909256217] [2024-11-07 16:40:17,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:17,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:40:17,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:17,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:40:17,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:17,329 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 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 16:40:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:17,502 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2024-11-07 16:40:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:17,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 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 16:40:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:17,503 INFO L225 Difference]: With dead ends: 123 [2024-11-07 16:40:17,503 INFO L226 Difference]: Without dead ends: 123 [2024-11-07 16:40:17,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:40:17,504 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 19 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:17,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 556 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:40:17,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-07 16:40:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2024-11-07 16:40:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 88 states have (on average 1.4886363636363635) internal successors, (131), 111 states have internal predecessors, (131), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:40:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 145 transitions. [2024-11-07 16:40:17,508 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 145 transitions. Word has length 28 [2024-11-07 16:40:17,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:17,508 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 145 transitions. [2024-11-07 16:40:17,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 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 16:40:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 145 transitions. [2024-11-07 16:40:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-07 16:40:17,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:17,509 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 16:40:17,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 16:40:17,509 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:17,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:17,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1919604348, now seen corresponding path program 1 times [2024-11-07 16:40:17,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:17,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831709955] [2024-11-07 16:40:17,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:17,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:17,623 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 16:40:17,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:17,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831709955] [2024-11-07 16:40:17,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831709955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:17,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:17,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:40:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654199028] [2024-11-07 16:40:17,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:17,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 16:40:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 16:40:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:40:17,625 INFO L87 Difference]: Start difference. First operand 121 states and 145 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 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 16:40:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:17,727 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2024-11-07 16:40:17,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:40:17,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 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 16:40:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:17,729 INFO L225 Difference]: With dead ends: 123 [2024-11-07 16:40:17,729 INFO L226 Difference]: Without dead ends: 123 [2024-11-07 16:40:17,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:40:17,730 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 23 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:17,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 574 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-07 16:40:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2024-11-07 16:40:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 112 states have internal predecessors, (130), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:40:17,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2024-11-07 16:40:17,734 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 30 [2024-11-07 16:40:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:17,735 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2024-11-07 16:40:17,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 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 16:40:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2024-11-07 16:40:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-07 16:40:17,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:17,736 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:17,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 16:40:17,736 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:17,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash -620175895, now seen corresponding path program 1 times [2024-11-07 16:40:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417826472] [2024-11-07 16:40:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:18,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:18,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:18,459 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 16:40:18,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417826472] [2024-11-07 16:40:18,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417826472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794644304] [2024-11-07 16:40:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:18,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:18,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:18,463 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 16:40:18,464 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 16:40:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:18,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-07 16:40:18,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:18,564 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 16:40:18,593 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 16:40:18,597 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 16:40:18,611 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 16:40:18,618 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 16:40:18,815 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#memory_$Pointer$#0.base| (store |c_old(#memory_$Pointer$#0.base)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.base| alloc_and_zero_internal_~pi~1.base))) (= (store |c_old(#memory_$Pointer$#0.offset)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.offset| alloc_and_zero_internal_~pi~1.base)) |c_#memory_$Pointer$#0.offset|))) is different from true [2024-11-07 16:40:18,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:18,852 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 16:40:18,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:18,859 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 16:40:18,867 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:18,867 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 16:40:18,983 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-07 16:40:18,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-07 16:40:18,998 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-07 16:40:18,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-07 16:40:19,189 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 16:40:19,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794644304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:19,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:19,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 27 [2024-11-07 16:40:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774174454] [2024-11-07 16:40:19,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:19,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 16:40:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:19,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 16:40:19,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=846, Unknown=1, NotChecked=58, Total=992 [2024-11-07 16:40:19,967 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand has 27 states, 25 states have (on average 1.92) internal successors, (48), 23 states have internal predecessors, (48), 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 16:40:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:20,971 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2024-11-07 16:40:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 16:40:20,972 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 23 states have internal predecessors, (48), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-11-07 16:40:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:20,972 INFO L225 Difference]: With dead ends: 128 [2024-11-07 16:40:20,972 INFO L226 Difference]: Without dead ends: 128 [2024-11-07 16:40:20,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=141, Invalid=1343, Unknown=2, NotChecked=74, Total=1560 [2024-11-07 16:40:20,974 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 8 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:20,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1105 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 624 Invalid, 0 Unknown, 108 Unchecked, 0.4s Time] [2024-11-07 16:40:20,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-07 16:40:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-07 16:40:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 95 states have (on average 1.431578947368421) internal successors, (136), 118 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:40:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2024-11-07 16:40:20,978 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 31 [2024-11-07 16:40:20,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:20,978 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2024-11-07 16:40:20,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 23 states have internal predecessors, (48), 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 16:40:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2024-11-07 16:40:20,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:40:20,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:20,979 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:20,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 16:40:21,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:21,180 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:21,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:21,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1011368275, now seen corresponding path program 1 times [2024-11-07 16:40:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:21,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979787880] [2024-11-07 16:40:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,255 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 16:40:21,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:21,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979787880] [2024-11-07 16:40:21,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979787880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:21,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684230741] [2024-11-07 16:40:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:21,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:21,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:21,258 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 16:40:21,262 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 16:40:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 16:40:21,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:21,370 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 16:40:21,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:21,384 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 16:40:21,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2024-11-07 16:40:21,395 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 16:40:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684230741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:21,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:21,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-11-07 16:40:21,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613899863] [2024-11-07 16:40:21,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:21,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:40:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:40:21,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:40:21,397 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:40:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:21,514 INFO L93 Difference]: Finished difference Result 143 states and 168 transitions. [2024-11-07 16:40:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:40:21,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-11-07 16:40:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:21,515 INFO L225 Difference]: With dead ends: 143 [2024-11-07 16:40:21,515 INFO L226 Difference]: Without dead ends: 143 [2024-11-07 16:40:21,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:40:21,516 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 25 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:21,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 271 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-07 16:40:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 130. [2024-11-07 16:40:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 120 states have internal predecessors, (141), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:40:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2024-11-07 16:40:21,520 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 33 [2024-11-07 16:40:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:21,521 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2024-11-07 16:40:21,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 16:40:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2024-11-07 16:40:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:40:21,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:21,522 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:21,541 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 16:40:21,722 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,SelfDestructingSolverStorable12 [2024-11-07 16:40:21,723 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:21,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1011368276, now seen corresponding path program 1 times [2024-11-07 16:40:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:21,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372662439] [2024-11-07 16:40:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:21,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:21,975 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 16:40:21,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:21,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372662439] [2024-11-07 16:40:21,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372662439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:21,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963670103] [2024-11-07 16:40:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:21,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:21,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:21,978 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 16:40:21,980 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 16:40:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:22,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 16:40:22,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:22,237 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 16:40:22,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:22,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:22,393 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 15 treesize of output 19 [2024-11-07 16:40:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:22,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963670103] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:22,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:22,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 23 [2024-11-07 16:40:22,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367375800] [2024-11-07 16:40:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:22,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:40:22,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:40:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2024-11-07 16:40:22,472 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:40:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:22,675 INFO L93 Difference]: Finished difference Result 146 states and 177 transitions. [2024-11-07 16:40:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:40:22,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2024-11-07 16:40:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:22,677 INFO L225 Difference]: With dead ends: 146 [2024-11-07 16:40:22,677 INFO L226 Difference]: Without dead ends: 146 [2024-11-07 16:40:22,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-07 16:40:22,678 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 41 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:22,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 355 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:40:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-07 16:40:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2024-11-07 16:40:22,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 105 states have (on average 1.438095238095238) internal successors, (151), 126 states have internal predecessors, (151), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:40:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 165 transitions. [2024-11-07 16:40:22,683 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 165 transitions. Word has length 33 [2024-11-07 16:40:22,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:22,683 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 165 transitions. [2024-11-07 16:40:22,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:40:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 165 transitions. [2024-11-07 16:40:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-07 16:40:22,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:22,684 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] [2024-11-07 16:40:22,700 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 16:40:22,884 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,SelfDestructingSolverStorable13 [2024-11-07 16:40:22,885 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:22,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1231508259, now seen corresponding path program 1 times [2024-11-07 16:40:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327277162] [2024-11-07 16:40:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:23,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:23,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:23,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-07 16:40:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:23,325 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 16:40:23,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:23,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327277162] [2024-11-07 16:40:23,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327277162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:23,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586934702] [2024-11-07 16:40:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:23,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:23,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:23,328 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 16:40:23,330 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 16:40:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:23,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-07 16:40:23,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:23,447 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 16:40:23,452 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 16:40:23,581 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1)))) is different from true [2024-11-07 16:40:23,623 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-07 16:40:23,623 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 16:40:23,628 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 16:40:23,709 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 16:40:23,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:23,729 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 16:40:23,744 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-07 16:40:23,744 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 16:40:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-07 16:40:23,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:23,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586934702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:23,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:23,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-07 16:40:23,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247883461] [2024-11-07 16:40:23,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:23,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 16:40:23,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:23,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 16:40:23,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=356, Unknown=2, NotChecked=78, Total=506 [2024-11-07 16:40:23,900 INFO L87 Difference]: Start difference. First operand 136 states and 165 transitions. Second operand has 21 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:40:24,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:24,328 INFO L93 Difference]: Finished difference Result 137 states and 161 transitions. [2024-11-07 16:40:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:24,328 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 34 [2024-11-07 16:40:24,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:24,329 INFO L225 Difference]: With dead ends: 137 [2024-11-07 16:40:24,329 INFO L226 Difference]: Without dead ends: 137 [2024-11-07 16:40:24,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=510, Unknown=4, NotChecked=94, Total=702 [2024-11-07 16:40:24,329 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 50 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:24,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 414 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 373 Invalid, 0 Unknown, 200 Unchecked, 0.3s Time] [2024-11-07 16:40:24,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-07 16:40:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 128. [2024-11-07 16:40:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 99 states have (on average 1.404040404040404) internal successors, (139), 119 states have internal predecessors, (139), 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 16:40:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2024-11-07 16:40:24,336 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 34 [2024-11-07 16:40:24,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:24,336 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2024-11-07 16:40:24,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:40:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2024-11-07 16:40:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-07 16:40:24,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:24,337 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] [2024-11-07 16:40:24,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 16:40:24,542 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,SelfDestructingSolverStorable14 [2024-11-07 16:40:24,543 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:24,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:24,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1287674574, now seen corresponding path program 1 times [2024-11-07 16:40:24,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:24,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054974241] [2024-11-07 16:40:24,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:24,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:24,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:24,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:24,649 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 16:40:24,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:24,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054974241] [2024-11-07 16:40:24,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054974241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:24,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:24,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 16:40:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153230948] [2024-11-07 16:40:24,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:24,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:40:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:40:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:24,650 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 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 16:40:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:24,772 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2024-11-07 16:40:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:24,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 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 34 [2024-11-07 16:40:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:24,773 INFO L225 Difference]: With dead ends: 135 [2024-11-07 16:40:24,773 INFO L226 Difference]: Without dead ends: 135 [2024-11-07 16:40:24,773 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 16:40:24,775 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 45 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:24,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 537 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-07 16:40:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2024-11-07 16:40:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.37) internal successors, (137), 120 states have internal predecessors, (137), 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 16:40:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2024-11-07 16:40:24,778 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 34 [2024-11-07 16:40:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:24,778 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2024-11-07 16:40:24,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 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 16:40:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2024-11-07 16:40:24,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-07 16:40:24,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:24,779 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 16:40:24,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 16:40:24,779 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:24,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1899276707, now seen corresponding path program 1 times [2024-11-07 16:40:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:24,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472661377] [2024-11-07 16:40:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:24,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:24,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:24,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:24,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:24,984 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 16:40:24,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472661377] [2024-11-07 16:40:24,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472661377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:24,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:24,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:40:24,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245368585] [2024-11-07 16:40:24,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:24,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:40:24,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:40:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:40:24,986 INFO L87 Difference]: Start difference. First operand 129 states and 149 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 16:40:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:25,122 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2024-11-07 16:40:25,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:40:25,123 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 16:40:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:25,123 INFO L225 Difference]: With dead ends: 128 [2024-11-07 16:40:25,124 INFO L226 Difference]: Without dead ends: 128 [2024-11-07 16:40:25,124 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 16:40:25,124 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:25,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 401 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:25,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-07 16:40:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-07 16:40:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 100 states have (on average 1.35) internal successors, (135), 119 states have internal predecessors, (135), 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 16:40:25,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2024-11-07 16:40:25,128 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 35 [2024-11-07 16:40:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:25,128 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2024-11-07 16:40:25,128 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 16:40:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2024-11-07 16:40:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-07 16:40:25,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:25,129 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 16:40:25,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 16:40:25,129 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:25,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:25,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1899276708, now seen corresponding path program 1 times [2024-11-07 16:40:25,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:25,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143199972] [2024-11-07 16:40:25,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:25,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:25,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:25,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:25,239 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 16:40:25,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:25,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143199972] [2024-11-07 16:40:25,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143199972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:25,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:25,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:40:25,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088497358] [2024-11-07 16:40:25,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:25,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:40:25,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:40:25,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:40:25,241 INFO L87 Difference]: Start difference. First operand 128 states and 147 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 16:40:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:25,376 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2024-11-07 16:40:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:40:25,377 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 16:40:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:25,377 INFO L225 Difference]: With dead ends: 127 [2024-11-07 16:40:25,377 INFO L226 Difference]: Without dead ends: 127 [2024-11-07 16:40:25,378 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 16:40:25,378 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 3 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:25,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 383 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:25,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-07 16:40:25,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-07 16:40:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 100 states have (on average 1.33) internal successors, (133), 118 states have internal predecessors, (133), 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 16:40:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2024-11-07 16:40:25,381 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 35 [2024-11-07 16:40:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:25,381 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2024-11-07 16:40:25,381 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 16:40:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2024-11-07 16:40:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-07 16:40:25,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:25,382 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 16:40:25,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 16:40:25,382 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:25,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:25,382 INFO L85 PathProgramCache]: Analyzing trace with hash 476767891, now seen corresponding path program 1 times [2024-11-07 16:40:25,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:25,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933990899] [2024-11-07 16:40:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:25,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:25,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:25,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:25,832 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 16:40:25,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933990899] [2024-11-07 16:40:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933990899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:25,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:25,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-07 16:40:25,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534812076] [2024-11-07 16:40:25,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:25,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 16:40:25,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:25,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 16:40:25,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-11-07 16:40:25,834 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 19 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:40:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:26,270 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2024-11-07 16:40:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 16:40:26,270 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-11-07 16:40:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:26,271 INFO L225 Difference]: With dead ends: 145 [2024-11-07 16:40:26,271 INFO L226 Difference]: Without dead ends: 145 [2024-11-07 16:40:26,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:40:26,272 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 50 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:26,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 651 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:40:26,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-07 16:40:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2024-11-07 16:40:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 128 states have internal predecessors, (146), 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 16:40:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2024-11-07 16:40:26,278 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 36 [2024-11-07 16:40:26,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:26,278 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2024-11-07 16:40:26,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:40:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2024-11-07 16:40:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-07 16:40:26,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:26,280 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 16:40:26,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 16:40:26,280 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 32 more)] === [2024-11-07 16:40:26,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash 476767892, now seen corresponding path program 1 times [2024-11-07 16:40:26,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326483717] [2024-11-07 16:40:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:26,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:26,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:26,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:26,888 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 16:40:26,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326483717] [2024-11-07 16:40:26,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326483717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:26,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:26,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-07 16:40:26,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273201291] [2024-11-07 16:40:26,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:26,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 16:40:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 16:40:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2024-11-07 16:40:26,890 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:40:27,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:27,336 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2024-11-07 16:40:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 16:40:27,336 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-11-07 16:40:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:27,337 INFO L225 Difference]: With dead ends: 155 [2024-11-07 16:40:27,337 INFO L226 Difference]: Without dead ends: 155 [2024-11-07 16:40:27,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2024-11-07 16:40:27,338 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 54 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:27,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 675 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:40:27,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-07 16:40:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 148. [2024-11-07 16:40:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 122 states have (on average 1.3360655737704918) internal successors, (163), 139 states have internal predecessors, (163), 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 16:40:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 175 transitions. [2024-11-07 16:40:27,343 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 175 transitions. Word has length 36 [2024-11-07 16:40:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:27,343 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 175 transitions. [2024-11-07 16:40:27,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 16:40:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 175 transitions. [2024-11-07 16:40:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-07 16:40:27,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:27,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:27,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 16:40:27,344 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:27,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash 103825653, now seen corresponding path program 1 times [2024-11-07 16:40:27,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:27,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971243764] [2024-11-07 16:40:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:27,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:27,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:27,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:27,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-07 16:40:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:27,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-07 16:40:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:27,544 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 16:40:27,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971243764] [2024-11-07 16:40:27,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971243764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:27,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072622617] [2024-11-07 16:40:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:27,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:27,547 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 16:40:27,549 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 16:40:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:27,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 16:40:27,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:27,678 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 16:40:27,692 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 16:40:27,697 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 16:40:27,719 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 16:40:27,732 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:40:27,732 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 16:40:27,740 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 16:40:27,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:27,832 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 16:40:27,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072622617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:27,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:27,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 13 [2024-11-07 16:40:27,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310481366] [2024-11-07 16:40:27,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:27,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 16:40:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:27,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 16:40:27,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-07 16:40:27,833 INFO L87 Difference]: Start difference. First operand 148 states and 175 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 16:40:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:28,020 INFO L93 Difference]: Finished difference Result 147 states and 174 transitions. [2024-11-07 16:40:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:40:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2024-11-07 16:40:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:28,021 INFO L225 Difference]: With dead ends: 147 [2024-11-07 16:40:28,022 INFO L226 Difference]: Without dead ends: 147 [2024-11-07 16:40:28,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 76 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 16:40:28,022 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 8 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:28,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 506 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 295 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2024-11-07 16:40:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-07 16:40:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-07 16:40:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 122 states have (on average 1.3278688524590163) internal successors, (162), 138 states have internal predecessors, (162), 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 16:40:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2024-11-07 16:40:28,032 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 38 [2024-11-07 16:40:28,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:28,032 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2024-11-07 16:40:28,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-07 16:40:28,032 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2024-11-07 16:40:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-07 16:40:28,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:28,033 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:28,051 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 16:40:28,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:28,233 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:28,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash 103825654, now seen corresponding path program 1 times [2024-11-07 16:40:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:28,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281585113] [2024-11-07 16:40:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-07 16:40:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-07 16:40:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,508 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 16:40:28,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:28,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281585113] [2024-11-07 16:40:28,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281585113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:28,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014805988] [2024-11-07 16:40:28,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:28,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:28,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:28,511 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 16:40:28,513 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 16:40:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:28,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-07 16:40:28,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:28,645 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 16:40:28,665 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 16:40:28,668 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 16:40:28,689 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 16:40:28,716 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base 8) |c_#length|)) is different from true [2024-11-07 16:40:28,736 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 16:40:28,736 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 16:40:28,744 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 16:40:28,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:28,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014805988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:28,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:28,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2024-11-07 16:40:28,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674502416] [2024-11-07 16:40:28,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:28,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 16:40:28,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:28,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 16:40:28,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2024-11-07 16:40:28,790 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 16:40:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:29,029 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2024-11-07 16:40:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:40:29,029 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-07 16:40:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:29,030 INFO L225 Difference]: With dead ends: 148 [2024-11-07 16:40:29,030 INFO L226 Difference]: Without dead ends: 148 [2024-11-07 16:40:29,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=254, Unknown=1, NotChecked=32, Total=342 [2024-11-07 16:40:29,031 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 4 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:29,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 539 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 0 Unknown, 89 Unchecked, 0.2s Time] [2024-11-07 16:40:29,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-07 16:40:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2024-11-07 16:40:29,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 121 states have (on average 1.322314049586777) internal successors, (160), 136 states have internal predecessors, (160), 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 16:40:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2024-11-07 16:40:29,036 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 38 [2024-11-07 16:40:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:29,036 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2024-11-07 16:40:29,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 16:40:29,036 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2024-11-07 16:40:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-07 16:40:29,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:29,039 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] [2024-11-07 16:40:29,055 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 16:40:29,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:29,240 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:29,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:29,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1387601212, now seen corresponding path program 1 times [2024-11-07 16:40:29,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:29,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386615417] [2024-11-07 16:40:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:29,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:29,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:29,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:29,371 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 16:40:29,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:29,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386615417] [2024-11-07 16:40:29,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386615417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:29,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:29,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 16:40:29,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554801491] [2024-11-07 16:40:29,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:29,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 16:40:29,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:29,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 16:40:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:40:29,373 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 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 16:40:29,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:29,507 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2024-11-07 16:40:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:40:29,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 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 38 [2024-11-07 16:40:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:29,509 INFO L225 Difference]: With dead ends: 148 [2024-11-07 16:40:29,509 INFO L226 Difference]: Without dead ends: 148 [2024-11-07 16:40:29,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:40:29,509 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 32 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 545 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 16:40:29,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 545 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-07 16:40:29,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 133. [2024-11-07 16:40:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 110 states have (on average 1.2818181818181817) internal successors, (141), 125 states have internal predecessors, (141), 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 16:40:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2024-11-07 16:40:29,513 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 38 [2024-11-07 16:40:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:29,514 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2024-11-07 16:40:29,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 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 16:40:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2024-11-07 16:40:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-07 16:40:29,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:29,514 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 16:40:29,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 16:40:29,515 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:29,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:29,515 INFO L85 PathProgramCache]: Analyzing trace with hash -64525601, now seen corresponding path program 1 times [2024-11-07 16:40:29,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:29,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264517295] [2024-11-07 16:40:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:29,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:29,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:29,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:29,915 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 16:40:29,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264517295] [2024-11-07 16:40:29,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264517295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:29,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:29,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-07 16:40:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150226401] [2024-11-07 16:40:29,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:29,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 16:40:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 16:40:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-11-07 16:40:29,918 INFO L87 Difference]: Start difference. First operand 133 states and 151 transitions. Second operand has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 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 16:40:30,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:30,301 INFO L93 Difference]: Finished difference Result 160 states and 181 transitions. [2024-11-07 16:40:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 16:40:30,302 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 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 39 [2024-11-07 16:40:30,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:30,302 INFO L225 Difference]: With dead ends: 160 [2024-11-07 16:40:30,302 INFO L226 Difference]: Without dead ends: 160 [2024-11-07 16:40:30,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:40:30,303 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 56 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:30,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 661 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:40:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-07 16:40:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 139. [2024-11-07 16:40:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 116 states have (on average 1.3017241379310345) internal successors, (151), 131 states have internal predecessors, (151), 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 16:40:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2024-11-07 16:40:30,307 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 39 [2024-11-07 16:40:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:30,307 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2024-11-07 16:40:30,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 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 16:40:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2024-11-07 16:40:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 16:40:30,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:30,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:30,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 16:40:30,308 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:30,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1032593832, now seen corresponding path program 1 times [2024-11-07 16:40:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:30,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369578277] [2024-11-07 16:40:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:30,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:30,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:30,426 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 16:40:30,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:30,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369578277] [2024-11-07 16:40:30,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369578277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:30,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:40:30,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 16:40:30,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246718377] [2024-11-07 16:40:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:30,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:40:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:30,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:40:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:40:30,428 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 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 16:40:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:30,571 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2024-11-07 16:40:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:40:30,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 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 41 [2024-11-07 16:40:30,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:30,572 INFO L225 Difference]: With dead ends: 140 [2024-11-07 16:40:30,572 INFO L226 Difference]: Without dead ends: 140 [2024-11-07 16:40:30,573 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 16:40:30,573 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 30 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:30,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 441 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:40:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-07 16:40:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-07 16:40:30,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 117 states have (on average 1.2991452991452992) internal successors, (152), 132 states have internal predecessors, (152), 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 16:40:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2024-11-07 16:40:30,577 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 41 [2024-11-07 16:40:30,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:30,577 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2024-11-07 16:40:30,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 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 16:40:30,577 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2024-11-07 16:40:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 16:40:30,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:30,578 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 16:40:30,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-07 16:40:30,578 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:30,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1863315864, now seen corresponding path program 1 times [2024-11-07 16:40:30,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:30,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712015928] [2024-11-07 16:40:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:30,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,344 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 16:40:31,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712015928] [2024-11-07 16:40:31,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712015928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123041290] [2024-11-07 16:40:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:31,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:31,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:31,347 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 16:40:31,348 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 16:40:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:31,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-07 16:40:31,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:31,483 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 16:40:31,654 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 16:40:31,660 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 16:40:31,739 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:31,739 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 16:40:31,925 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 33 treesize of output 17 [2024-11-07 16:40:31,930 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 22 treesize of output 17 [2024-11-07 16:40:32,256 INFO L349 Elim1Store]: treesize reduction 29, result has 21.6 percent of original size [2024-11-07 16:40:32,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 36 [2024-11-07 16:40:32,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:32,266 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 16:40:32,394 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 16:40:32,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:32,708 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~1#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~1#1.base|) (+ |c_ULTIMATE.start_create_~now~1#1.offset| 8) |c_ULTIMATE.start_create_~shared~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_create_~sll~1#1.base|) (+ 8 |c_ULTIMATE.start_create_~sll~1#1.offset|)))) (and (= (select (select .cse0 .cse1) 0) 0) (forall ((v_ArrVal_1225 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~1#1.base| v_ArrVal_1225) .cse1) 0) 0))))) is different from false [2024-11-07 16:40:32,717 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~1#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~1#1.base|) (+ |c_ULTIMATE.start_create_~now~1#1.offset| 8) |c_ULTIMATE.start_create_internal_#res#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_create_~sll~1#1.base|) (+ 8 |c_ULTIMATE.start_create_~sll~1#1.offset|)))) (and (= (select (select .cse0 .cse1) 0) 0) (forall ((v_ArrVal_1225 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~1#1.base| v_ArrVal_1225) .cse1) 0) 0))))) is different from false [2024-11-07 16:40:32,725 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~1#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~1#1.base|) (+ |c_ULTIMATE.start_create_~now~1#1.offset| 8) |c_ULTIMATE.start_create_internal_~sll~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_create_~sll~1#1.base|) (+ 8 |c_ULTIMATE.start_create_~sll~1#1.offset|)))) (and (= (select (select .cse0 .cse1) 0) 0) (forall ((v_ArrVal_1225 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~1#1.base| v_ArrVal_1225) .cse1) 0) 0))))) is different from false [2024-11-07 16:40:32,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:32,900 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 3024 treesize of output 2824 [2024-11-07 16:40:33,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:33,052 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 1073 treesize of output 1034 [2024-11-07 16:40:33,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:33,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1106 treesize of output 1102 [2024-11-07 16:40:33,163 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 1049 treesize of output 1037 [2024-11-07 16:40:34,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123041290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:34,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:34,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 45 [2024-11-07 16:40:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745698662] [2024-11-07 16:40:34,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:34,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-07 16:40:34,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-07 16:40:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2709, Unknown=18, NotChecked=318, Total=3192 [2024-11-07 16:40:34,675 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 39 states have internal predecessors, (70), 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 16:40:36,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:36,027 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2024-11-07 16:40:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 16:40:36,028 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 39 states have internal predecessors, (70), 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 42 [2024-11-07 16:40:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:36,029 INFO L225 Difference]: With dead ends: 153 [2024-11-07 16:40:36,029 INFO L226 Difference]: Without dead ends: 153 [2024-11-07 16:40:36,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=246, Invalid=4038, Unknown=18, NotChecked=390, Total=4692 [2024-11-07 16:40:36,030 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 43 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:36,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1644 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 16:40:36,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-07 16:40:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 143. [2024-11-07 16:40:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 135 states have internal predecessors, (155), 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 16:40:36,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2024-11-07 16:40:36,034 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 42 [2024-11-07 16:40:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:36,034 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2024-11-07 16:40:36,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.627906976744186) internal successors, (70), 39 states have internal predecessors, (70), 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 16:40:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2024-11-07 16:40:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-07 16:40:36,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:36,035 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:36,051 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 16:40:36,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:36,239 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:36,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1061655181, now seen corresponding path program 1 times [2024-11-07 16:40:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:36,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765337128] [2024-11-07 16:40:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:36,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:36,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:37,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-07 16:40:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:37,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:37,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765337128] [2024-11-07 16:40:37,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765337128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:37,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746900004] [2024-11-07 16:40:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:37,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:37,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:37,324 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 16:40:37,326 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 16:40:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:37,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-07 16:40:37,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:37,480 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 16:40:37,516 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 16:40:37,527 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 16:40:37,570 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 16:40:37,577 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 23 treesize of output 11 [2024-11-07 16:40:37,920 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:40:37,920 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 16:40:37,938 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-07 16:40:37,939 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 16:40:37,945 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 16:40:38,115 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#memory_$Pointer$#0.base| (store |c_old(#memory_$Pointer$#0.base)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.base| alloc_and_zero_internal_~pi~1.base))) (= (store |c_old(#memory_$Pointer$#0.offset)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.offset| alloc_and_zero_internal_~pi~1.base)) |c_#memory_$Pointer$#0.offset|))) is different from true [2024-11-07 16:40:38,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:38,133 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 16:40:38,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:38,138 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 16:40:38,148 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-07 16:40:38,148 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 16:40:38,210 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 16:40:38,216 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 16:40:38,317 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-07 16:40:38,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-07 16:40:38,335 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-07 16:40:38,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2024-11-07 16:40:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2024-11-07 16:40:38,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:39,060 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_create_~now~1#1.offset| 8))) (and (forall ((v_ArrVal_1326 (Array Int Int)) (|ULTIMATE.start_create_~shared~0#1.base| Int) (|v_ULTIMATE.start_loop_~x#1.offset_24| Int)) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_internal_~now~0#1.base| v_ArrVal_1326))) (store .cse0 |c_ULTIMATE.start_create_~now~1#1.base| (store (select .cse0 |c_ULTIMATE.start_create_~now~1#1.base|) .cse1 |ULTIMATE.start_create_~shared~0#1.base|))) |c_ULTIMATE.start_create_~sll~1#1.base|) |v_ULTIMATE.start_loop_~x#1.offset_24|) 0) (< |v_ULTIMATE.start_loop_~x#1.offset_24| 0) (< |c_ULTIMATE.start_create_~sll~1#1.offset| |v_ULTIMATE.start_loop_~x#1.offset_24|))) (forall ((v_ArrVal_1325 (Array Int Int)) (v_ArrVal_1327 Int) (|v_ULTIMATE.start_loop_~x#1.offset_24| Int)) (or (< |v_ULTIMATE.start_loop_~x#1.offset_24| 0) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_internal_~now~0#1.base| v_ArrVal_1325))) (store .cse2 |c_ULTIMATE.start_create_~now~1#1.base| (store (select .cse2 |c_ULTIMATE.start_create_~now~1#1.base|) .cse1 v_ArrVal_1327))) |c_ULTIMATE.start_create_~sll~1#1.base|) |v_ULTIMATE.start_loop_~x#1.offset_24|) 0) (< |c_ULTIMATE.start_create_~sll~1#1.offset| |v_ULTIMATE.start_loop_~x#1.offset_24|))))) is different from false [2024-11-07 16:40:39,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746900004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:39,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:39,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 41 [2024-11-07 16:40:39,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241795435] [2024-11-07 16:40:39,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:39,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-07 16:40:39,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:39,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-07 16:40:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1849, Unknown=2, NotChecked=174, Total=2162 [2024-11-07 16:40:39,270 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand has 41 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 33 states have internal predecessors, (69), 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 16:40:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:40,248 INFO L93 Difference]: Finished difference Result 164 states and 191 transitions. [2024-11-07 16:40:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 16:40:40,249 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 33 states have internal predecessors, (69), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2024-11-07 16:40:40,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:40,250 INFO L225 Difference]: With dead ends: 164 [2024-11-07 16:40:40,250 INFO L226 Difference]: Without dead ends: 164 [2024-11-07 16:40:40,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=224, Invalid=2862, Unknown=2, NotChecked=218, Total=3306 [2024-11-07 16:40:40,251 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 46 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:40,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1302 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1027 Invalid, 0 Unknown, 111 Unchecked, 0.5s Time] [2024-11-07 16:40:40,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-07 16:40:40,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2024-11-07 16:40:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 137 states have (on average 1.27007299270073) internal successors, (174), 152 states have internal predecessors, (174), 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 16:40:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 186 transitions. [2024-11-07 16:40:40,255 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 186 transitions. Word has length 43 [2024-11-07 16:40:40,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:40,256 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 186 transitions. [2024-11-07 16:40:40,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 33 states have internal predecessors, (69), 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 16:40:40,256 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 186 transitions. [2024-11-07 16:40:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 16:40:40,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:40,257 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 16:40:40,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 16:40:40,460 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,SelfDestructingSolverStorable26 [2024-11-07 16:40:40,461 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:40,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1812330737, now seen corresponding path program 1 times [2024-11-07 16:40:40,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:40,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155963818] [2024-11-07 16:40:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:40,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:40,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:40,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:40,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:40,661 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 16:40:40,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:40,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155963818] [2024-11-07 16:40:40,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155963818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:40,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093367124] [2024-11-07 16:40:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:40,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:40,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:40,664 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 16:40:40,666 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 16:40:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:40,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-07 16:40:40,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:40,887 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 16:40:40,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:40,912 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 16:40:40,918 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:40,919 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 16:40:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:41,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:41,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093367124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:41,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:41,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2024-11-07 16:40:41,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625948734] [2024-11-07 16:40:41,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:41,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 16:40:41,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:41,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 16:40:41,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=444, Unknown=1, NotChecked=42, Total=552 [2024-11-07 16:40:41,154 INFO L87 Difference]: Start difference. First operand 161 states and 186 transitions. Second operand has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 15 states have internal predecessors, (67), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:40:41,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:41,440 INFO L93 Difference]: Finished difference Result 162 states and 187 transitions. [2024-11-07 16:40:41,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:40:41,440 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 15 states have internal predecessors, (67), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 44 [2024-11-07 16:40:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:41,441 INFO L225 Difference]: With dead ends: 162 [2024-11-07 16:40:41,441 INFO L226 Difference]: Without dead ends: 162 [2024-11-07 16:40:41,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=759, Unknown=3, NotChecked=56, Total=930 [2024-11-07 16:40:41,442 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 30 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:41,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 739 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 393 Invalid, 0 Unknown, 100 Unchecked, 0.2s Time] [2024-11-07 16:40:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-07 16:40:41,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2024-11-07 16:40:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 137 states have (on average 1.2627737226277371) internal successors, (173), 152 states have internal predecessors, (173), 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 16:40:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2024-11-07 16:40:41,446 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 44 [2024-11-07 16:40:41,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:41,447 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2024-11-07 16:40:41,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 15 states have internal predecessors, (67), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:40:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2024-11-07 16:40:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 16:40:41,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:41,448 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:41,464 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 16:40:41,648 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,SelfDestructingSolverStorable27 [2024-11-07 16:40:41,648 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:41,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1447246632, now seen corresponding path program 1 times [2024-11-07 16:40:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:41,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047752886] [2024-11-07 16:40:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:41,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:41,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:41,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:41,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:41,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047752886] [2024-11-07 16:40:41,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047752886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:41,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183501367] [2024-11-07 16:40:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:41,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:41,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:41,829 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 16:40:41,831 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 16:40:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:41,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-07 16:40:41,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:42,138 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 16:40:42,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:42,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 16 [2024-11-07 16:40:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:42,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:40:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183501367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:40:42,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:40:42,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 29 [2024-11-07 16:40:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762190993] [2024-11-07 16:40:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:40:42,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 16:40:42,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 16:40:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=748, Unknown=0, NotChecked=0, Total=812 [2024-11-07 16:40:42,296 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 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 16:40:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:42,605 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2024-11-07 16:40:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 16:40:42,605 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 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 44 [2024-11-07 16:40:42,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:42,606 INFO L225 Difference]: With dead ends: 187 [2024-11-07 16:40:42,606 INFO L226 Difference]: Without dead ends: 182 [2024-11-07 16:40:42,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 16:40:42,607 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 56 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:42,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 795 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:40:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-07 16:40:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 161. [2024-11-07 16:40:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 137 states have (on average 1.2481751824817517) internal successors, (171), 152 states have internal predecessors, (171), 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 16:40:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 183 transitions. [2024-11-07 16:40:42,611 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 183 transitions. Word has length 44 [2024-11-07 16:40:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:42,611 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 183 transitions. [2024-11-07 16:40:42,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 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 16:40:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 183 transitions. [2024-11-07 16:40:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 16:40:42,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:42,612 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:40:42,630 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 16:40:42,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-07 16:40:42,816 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:42,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash -354860920, now seen corresponding path program 1 times [2024-11-07 16:40:42,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:42,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030069952] [2024-11-07 16:40:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:42,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:43,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:43,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:43,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030069952] [2024-11-07 16:40:43,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030069952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:43,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382188882] [2024-11-07 16:40:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:43,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:43,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:43,382 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 16:40:43,382 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 16:40:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:43,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-07 16:40:43,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:43,511 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 16:40:43,616 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:43,616 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 16:40:43,714 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 19 treesize of output 1 [2024-11-07 16:40:43,807 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 20 treesize of output 8 [2024-11-07 16:40:43,864 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 16:40:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:43,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:43,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-07 16:40:43,936 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 32 treesize of output 26 [2024-11-07 16:40:44,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382188882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:44,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:44,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36 [2024-11-07 16:40:44,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732202144] [2024-11-07 16:40:44,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:44,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-07 16:40:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:44,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-07 16:40:44,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2024-11-07 16:40:44,012 INFO L87 Difference]: Start difference. First operand 161 states and 183 transitions. Second operand has 37 states, 34 states have (on average 2.176470588235294) internal successors, (74), 31 states have internal predecessors, (74), 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 16:40:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:44,572 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2024-11-07 16:40:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 16:40:44,572 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 2.176470588235294) internal successors, (74), 31 states have internal predecessors, (74), 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 44 [2024-11-07 16:40:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:44,573 INFO L225 Difference]: With dead ends: 204 [2024-11-07 16:40:44,573 INFO L226 Difference]: Without dead ends: 204 [2024-11-07 16:40:44,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=1666, Unknown=0, NotChecked=0, Total=1806 [2024-11-07 16:40:44,575 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 136 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:44,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1073 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 16:40:44,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-07 16:40:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 162. [2024-11-07 16:40:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 138 states have (on average 1.2463768115942029) internal successors, (172), 153 states have internal predecessors, (172), 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 16:40:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 184 transitions. [2024-11-07 16:40:44,579 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 184 transitions. Word has length 44 [2024-11-07 16:40:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:44,580 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 184 transitions. [2024-11-07 16:40:44,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 2.176470588235294) internal successors, (74), 31 states have internal predecessors, (74), 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 16:40:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 184 transitions. [2024-11-07 16:40:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-07 16:40:44,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:44,581 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] [2024-11-07 16:40:44,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-07 16:40:44,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:44,781 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:44,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash -888864373, now seen corresponding path program 1 times [2024-11-07 16:40:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:44,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211422782] [2024-11-07 16:40:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:44,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:45,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:45,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:45,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:45,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:45,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211422782] [2024-11-07 16:40:45,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211422782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:45,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539323145] [2024-11-07 16:40:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:45,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:45,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:45,131 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 16:40:45,133 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 16:40:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:45,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-07 16:40:45,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:45,424 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:45,424 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 16:40:45,464 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 16:40:45,537 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:40:45,537 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 16:40:45,685 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 16:40:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:45,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:45,777 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2024-11-07 16:40:45,777 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 18 [2024-11-07 16:40:45,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:45,839 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 16:40:45,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:45,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2024-11-07 16:40:45,852 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 16:40:45,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539323145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:45,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:45,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 31 [2024-11-07 16:40:45,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595616200] [2024-11-07 16:40:45,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:45,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 16:40:45,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:45,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 16:40:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1350, Unknown=1, NotChecked=0, Total=1482 [2024-11-07 16:40:45,945 INFO L87 Difference]: Start difference. First operand 162 states and 184 transitions. Second operand has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 27 states have internal predecessors, (74), 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 16:40:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:46,285 INFO L93 Difference]: Finished difference Result 166 states and 191 transitions. [2024-11-07 16:40:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 16:40:46,286 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 27 states have internal predecessors, (74), 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 47 [2024-11-07 16:40:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:46,287 INFO L225 Difference]: With dead ends: 166 [2024-11-07 16:40:46,287 INFO L226 Difference]: Without dead ends: 166 [2024-11-07 16:40:46,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=1709, Unknown=1, NotChecked=0, Total=1892 [2024-11-07 16:40:46,288 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 25 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:46,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 978 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:40:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-07 16:40:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2024-11-07 16:40:46,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 141 states have (on average 1.2553191489361701) internal successors, (177), 156 states have internal predecessors, (177), 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 16:40:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 189 transitions. [2024-11-07 16:40:46,292 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 189 transitions. Word has length 47 [2024-11-07 16:40:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:46,292 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 189 transitions. [2024-11-07 16:40:46,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 27 states have internal predecessors, (74), 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 16:40:46,292 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 189 transitions. [2024-11-07 16:40:46,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-07 16:40:46,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:46,293 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] [2024-11-07 16:40:46,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-07 16:40:46,493 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,SelfDestructingSolverStorable30 [2024-11-07 16:40:46,494 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:46,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:46,494 INFO L85 PathProgramCache]: Analyzing trace with hash -888864372, now seen corresponding path program 1 times [2024-11-07 16:40:46,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:46,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276951651] [2024-11-07 16:40:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:46,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:46,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:46,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:46,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276951651] [2024-11-07 16:40:46,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276951651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:46,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318474091] [2024-11-07 16:40:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:46,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:46,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:46,877 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 16:40:46,878 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 16:40:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:47,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-07 16:40:47,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:47,152 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 16:40:47,209 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:47,209 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 16:40:47,242 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 16:40:47,249 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 16:40:47,327 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:40:47,328 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 65 treesize of output 58 [2024-11-07 16:40:47,333 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 39 treesize of output 11 [2024-11-07 16:40:47,445 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 16:40:47,448 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 16:40:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:47,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:47,661 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem13#1.base|)) (.cse1 (+ 8 |c_ULTIMATE.start_create_#t~mem13#1.offset|))) (and (forall ((v_ArrVal_1773 Int)) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem13#1.base| (store .cse0 .cse1 v_ArrVal_1773)) |c_ULTIMATE.start_create_~sll~1#1.base|) |c_ULTIMATE.start_create_~sll~1#1.offset|))) (forall ((v_ArrVal_1772 (Array Int Int)) (v_ArrVal_1773 Int)) (<= (+ (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem13#1.base| (store .cse0 .cse1 v_ArrVal_1773)) |c_ULTIMATE.start_create_~sll~1#1.base|) |c_ULTIMATE.start_create_~sll~1#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem13#1.base| v_ArrVal_1772) |c_ULTIMATE.start_create_~sll~1#1.base|) |c_ULTIMATE.start_create_~sll~1#1.offset|)))))) is different from false [2024-11-07 16:40:47,758 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 170 treesize of output 162 [2024-11-07 16:40:47,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:47,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:47,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:47,798 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 66 treesize of output 58 [2024-11-07 16:40:47,802 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 78 [2024-11-07 16:40:47,805 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 57 treesize of output 53 [2024-11-07 16:40:47,900 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 37 treesize of output 35 [2024-11-07 16:40:47,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318474091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:47,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:47,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2024-11-07 16:40:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146152428] [2024-11-07 16:40:47,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:47,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 16:40:47,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:47,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 16:40:47,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1418, Unknown=16, NotChecked=76, Total=1640 [2024-11-07 16:40:47,944 INFO L87 Difference]: Start difference. First operand 165 states and 189 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 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 16:40:48,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:48,439 INFO L93 Difference]: Finished difference Result 166 states and 190 transitions. [2024-11-07 16:40:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 16:40:48,439 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 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 47 [2024-11-07 16:40:48,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:48,440 INFO L225 Difference]: With dead ends: 166 [2024-11-07 16:40:48,440 INFO L226 Difference]: Without dead ends: 166 [2024-11-07 16:40:48,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=1873, Unknown=16, NotChecked=88, Total=2162 [2024-11-07 16:40:48,441 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 16 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:48,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1118 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:40:48,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-07 16:40:48,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2024-11-07 16:40:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 141 states have (on average 1.24822695035461) internal successors, (176), 156 states have internal predecessors, (176), 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 16:40:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2024-11-07 16:40:48,451 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 47 [2024-11-07 16:40:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:48,451 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2024-11-07 16:40:48,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 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 16:40:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2024-11-07 16:40:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:40:48,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:48,453 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 16:40:48,472 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 16:40:48,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:48,654 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:48,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1719790559, now seen corresponding path program 1 times [2024-11-07 16:40:48,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:48,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279697350] [2024-11-07 16:40:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:48,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:48,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:48,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:48,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:48,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-07 16:40:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:40:48,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:48,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279697350] [2024-11-07 16:40:48,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279697350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:48,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165149052] [2024-11-07 16:40:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:48,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:48,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:48,925 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 16:40:48,926 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 16:40:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:49,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 16:40:49,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:49,104 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:49,104 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 16:40:49,120 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 16:40:49,155 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:40:49,155 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 16:40:49,164 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 16:40:49,177 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 16:40:49,206 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-07 16:40:49,207 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 16:40:49,209 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 16:40:49,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:49,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165149052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:49,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:49,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 20 [2024-11-07 16:40:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267444584] [2024-11-07 16:40:49,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:49,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 16:40:49,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 16:40:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=367, Unknown=1, NotChecked=38, Total=462 [2024-11-07 16:40:49,256 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand has 21 states, 20 states have (on average 2.95) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:40:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:49,502 INFO L93 Difference]: Finished difference Result 164 states and 187 transitions. [2024-11-07 16:40:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:40:49,502 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2024-11-07 16:40:49,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:49,503 INFO L225 Difference]: With dead ends: 164 [2024-11-07 16:40:49,503 INFO L226 Difference]: Without dead ends: 164 [2024-11-07 16:40:49,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=560, Unknown=1, NotChecked=48, Total=702 [2024-11-07 16:40:49,503 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 11 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:49,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 663 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 367 Invalid, 0 Unknown, 77 Unchecked, 0.2s Time] [2024-11-07 16:40:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-07 16:40:49,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-07 16:40:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 155 states have internal predecessors, (175), 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 16:40:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 187 transitions. [2024-11-07 16:40:49,507 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 187 transitions. Word has length 48 [2024-11-07 16:40:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:49,507 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 187 transitions. [2024-11-07 16:40:49,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:40:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 187 transitions. [2024-11-07 16:40:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:40:49,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:49,508 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 16:40:49,527 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 16:40:49,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:49,709 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:49,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1719790558, now seen corresponding path program 1 times [2024-11-07 16:40:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937379170] [2024-11-07 16:40:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:49,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:49,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:49,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:50,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-07 16:40:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 16:40:50,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:50,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937379170] [2024-11-07 16:40:50,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937379170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:50,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268573041] [2024-11-07 16:40:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:50,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:50,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:50,094 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 16:40:50,095 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 16:40:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:50,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-07 16:40:50,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:50,271 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 16:40:50,325 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:50,325 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 16:40:50,346 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 16:40:50,350 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 16:40:50,403 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:40:50,403 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 16:40:50,409 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 16:40:50,440 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 16:40:50,443 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 16:40:50,514 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 16:40:50,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:50,527 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 16:40:50,533 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:50,533 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 16:40:50,549 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 16:40:50,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:50,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268573041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:50,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:50,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2024-11-07 16:40:50,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759276450] [2024-11-07 16:40:50,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:50,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-07 16:40:50,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:50,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-07 16:40:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=727, Unknown=1, NotChecked=54, Total=870 [2024-11-07 16:40:50,625 INFO L87 Difference]: Start difference. First operand 164 states and 187 transitions. Second operand has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 21 states have internal predecessors, (62), 4 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:40:51,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:51,045 INFO L93 Difference]: Finished difference Result 161 states and 184 transitions. [2024-11-07 16:40:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 16:40:51,045 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 21 states have internal predecessors, (62), 4 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 48 [2024-11-07 16:40:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:51,046 INFO L225 Difference]: With dead ends: 161 [2024-11-07 16:40:51,046 INFO L226 Difference]: Without dead ends: 161 [2024-11-07 16:40:51,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=1107, Unknown=1, NotChecked=68, Total=1332 [2024-11-07 16:40:51,047 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 18 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:51,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 933 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 646 Invalid, 0 Unknown, 87 Unchecked, 0.3s Time] [2024-11-07 16:40:51,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-07 16:40:51,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-07 16:40:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 152 states have internal predecessors, (172), 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 16:40:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 184 transitions. [2024-11-07 16:40:51,050 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 184 transitions. Word has length 48 [2024-11-07 16:40:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:51,050 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 184 transitions. [2024-11-07 16:40:51,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 21 states have internal predecessors, (62), 4 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-07 16:40:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 184 transitions. [2024-11-07 16:40:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:40:51,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:51,051 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] [2024-11-07 16:40:51,068 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 16:40:51,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:51,251 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:51,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:51,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1553562953, now seen corresponding path program 1 times [2024-11-07 16:40:51,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:51,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768108685] [2024-11-07 16:40:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:51,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:51,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:51,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:51,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-07 16:40:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:40:51,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:51,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768108685] [2024-11-07 16:40:51,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768108685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:51,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762190375] [2024-11-07 16:40:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:51,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:51,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:51,569 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 16:40:51,570 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 16:40:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:51,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-07 16:40:51,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:51,917 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 19 treesize of output 1 [2024-11-07 16:40:51,991 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 16:40:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 16:40:51,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:52,112 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 28 [2024-11-07 16:40:52,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:52,360 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 34 treesize of output 52 [2024-11-07 16:40:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 16:40:52,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762190375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:52,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:52,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 13] total 38 [2024-11-07 16:40:52,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522688908] [2024-11-07 16:40:52,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:52,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-07 16:40:52,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:52,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-07 16:40:52,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1347, Unknown=0, NotChecked=0, Total=1482 [2024-11-07 16:40:52,483 INFO L87 Difference]: Start difference. First operand 161 states and 184 transitions. Second operand has 39 states, 38 states have (on average 2.4210526315789473) internal successors, (92), 36 states have internal predecessors, (92), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-07 16:40:52,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:52,949 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2024-11-07 16:40:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 16:40:52,950 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.4210526315789473) internal successors, (92), 36 states have internal predecessors, (92), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 48 [2024-11-07 16:40:52,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:52,950 INFO L225 Difference]: With dead ends: 175 [2024-11-07 16:40:52,950 INFO L226 Difference]: Without dead ends: 175 [2024-11-07 16:40:52,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=1644, Unknown=0, NotChecked=0, Total=1806 [2024-11-07 16:40:52,951 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 97 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:52,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1279 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:40:52,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-07 16:40:52,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2024-11-07 16:40:52,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 147 states have (on average 1.217687074829932) internal successors, (179), 158 states have internal predecessors, (179), 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 16:40:52,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2024-11-07 16:40:52,957 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 48 [2024-11-07 16:40:52,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:52,957 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2024-11-07 16:40:52,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.4210526315789473) internal successors, (92), 36 states have internal predecessors, (92), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-07 16:40:52,957 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2024-11-07 16:40:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:40:52,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:52,958 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] [2024-11-07 16:40:52,976 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 16:40:53,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-07 16:40:53,159 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:53,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:53,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1553562954, now seen corresponding path program 1 times [2024-11-07 16:40:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:53,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503359024] [2024-11-07 16:40:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:53,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:53,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:53,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:53,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-07 16:40:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:40:53,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503359024] [2024-11-07 16:40:53,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503359024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329038630] [2024-11-07 16:40:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:53,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:53,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:53,778 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 16:40:53,788 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 16:40:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:53,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-07 16:40:53,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:54,169 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 19 treesize of output 1 [2024-11-07 16:40:54,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-07 16:40:54,294 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 21 treesize of output 9 [2024-11-07 16:40:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:40:54,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:54,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 64 [2024-11-07 16:40:54,540 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 94 treesize of output 82 [2024-11-07 16:40:54,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:54,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:54,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:54,684 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 25 treesize of output 29 [2024-11-07 16:40:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 16:40:54,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329038630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:40:54,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:40:54,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15, 15] total 50 [2024-11-07 16:40:54,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715830726] [2024-11-07 16:40:54,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:54,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-07 16:40:54,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:54,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-07 16:40:54,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2379, Unknown=0, NotChecked=0, Total=2550 [2024-11-07 16:40:54,854 INFO L87 Difference]: Start difference. First operand 167 states and 191 transitions. Second operand has 51 states, 48 states have (on average 2.3333333333333335) internal successors, (112), 46 states have internal predecessors, (112), 6 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-07 16:40:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:55,577 INFO L93 Difference]: Finished difference Result 192 states and 220 transitions. [2024-11-07 16:40:55,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 16:40:55,577 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 2.3333333333333335) internal successors, (112), 46 states have internal predecessors, (112), 6 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 48 [2024-11-07 16:40:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:55,578 INFO L225 Difference]: With dead ends: 192 [2024-11-07 16:40:55,578 INFO L226 Difference]: Without dead ends: 192 [2024-11-07 16:40:55,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=248, Invalid=3412, Unknown=0, NotChecked=0, Total=3660 [2024-11-07 16:40:55,580 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 97 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:55,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1049 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 16:40:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-07 16:40:55,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 169. [2024-11-07 16:40:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 149 states have (on average 1.2080536912751678) internal successors, (180), 160 states have internal predecessors, (180), 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 16:40:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 192 transitions. [2024-11-07 16:40:55,584 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 192 transitions. Word has length 48 [2024-11-07 16:40:55,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:55,584 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 192 transitions. [2024-11-07 16:40:55,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 2.3333333333333335) internal successors, (112), 46 states have internal predecessors, (112), 6 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-07 16:40:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 192 transitions. [2024-11-07 16:40:55,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-07 16:40:55,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:55,585 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] [2024-11-07 16:40:55,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-07 16:40:55,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:55,786 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:55,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash 499778678, now seen corresponding path program 1 times [2024-11-07 16:40:55,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:55,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395595829] [2024-11-07 16:40:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:55,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:55,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:56,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:56,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:56,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:56,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395595829] [2024-11-07 16:40:56,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395595829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:56,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428312050] [2024-11-07 16:40:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:56,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:56,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:56,099 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 16:40:56,101 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 16:40:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:56,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-07 16:40:56,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:56,443 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:56,443 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 16:40:56,476 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 16:40:56,549 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-07 16:40:56,550 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 33 treesize of output 32 [2024-11-07 16:40:56,658 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-07 16:40:56,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:56,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2024-11-07 16:40:56,700 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 16:40:56,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:40:56,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:56,979 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 16:40:56,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:40:56,985 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 16:40:56,989 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 16:40:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428312050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:57,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:40:57,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 32 [2024-11-07 16:40:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553493101] [2024-11-07 16:40:57,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:40:57,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 16:40:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:40:57,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 16:40:57,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1521, Unknown=8, NotChecked=0, Total=1640 [2024-11-07 16:40:57,164 INFO L87 Difference]: Start difference. First operand 169 states and 192 transitions. Second operand has 32 states, 32 states have (on average 2.53125) internal successors, (81), 27 states have internal predecessors, (81), 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 16:40:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:40:57,867 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2024-11-07 16:40:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 16:40:57,867 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.53125) internal successors, (81), 27 states have internal predecessors, (81), 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 49 [2024-11-07 16:40:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:40:57,868 INFO L225 Difference]: With dead ends: 198 [2024-11-07 16:40:57,868 INFO L226 Difference]: Without dead ends: 198 [2024-11-07 16:40:57,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=200, Invalid=2444, Unknown=8, NotChecked=0, Total=2652 [2024-11-07 16:40:57,869 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 52 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:40:57,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1421 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:40:57,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-07 16:40:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2024-11-07 16:40:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 155 states have (on average 1.2129032258064516) internal successors, (188), 166 states have internal predecessors, (188), 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 16:40:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 200 transitions. [2024-11-07 16:40:57,873 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 200 transitions. Word has length 49 [2024-11-07 16:40:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:40:57,873 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 200 transitions. [2024-11-07 16:40:57,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.53125) internal successors, (81), 27 states have internal predecessors, (81), 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 16:40:57,873 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 200 transitions. [2024-11-07 16:40:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-07 16:40:57,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:40:57,875 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-07 16:40:57,893 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 16:40:58,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-07 16:40:58,076 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2024-11-07 16:40:58,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:40:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1685098736, now seen corresponding path program 2 times [2024-11-07 16:40:58,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:40:58,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030985760] [2024-11-07 16:40:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:40:58,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:40:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:58,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:40:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:58,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 16:40:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:58,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 16:40:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:40:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:40:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:40:58,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030985760] [2024-11-07 16:40:58,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030985760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:40:58,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530560728] [2024-11-07 16:40:58,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:40:58,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:40:58,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:40:58,786 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:40:58,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-07 16:40:58,960 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:40:58,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:40:58,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-07 16:40:58,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:40:59,039 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 16:40:59,042 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 16:40:59,047 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 16:40:59,052 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 16:40:59,082 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:40:59,083 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 16:40:59,116 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 22 [2024-11-07 16:40:59,123 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 16:40:59,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:59,204 INFO L349 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2024-11-07 16:40:59,205 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 93 treesize of output 66 [2024-11-07 16:40:59,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:40:59,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 25 [2024-11-07 16:40:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:40:59,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:41:09,556 INFO L349 Elim1Store]: treesize reduction 474, result has 43.8 percent of original size [2024-11-07 16:41:09,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 19 case distinctions, treesize of input 3168 treesize of output 2227 [2024-11-07 16:41:09,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:09,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 3093 treesize of output 3240 [2024-11-07 16:41:11,119 INFO L349 Elim1Store]: treesize reduction 959, result has 43.5 percent of original size [2024-11-07 16:41:11,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 3019 treesize of output 2784 [2024-11-07 16:41:11,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:41:11,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3561 treesize of output 3755