./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7'] 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/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 16:51:09,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 16:51:09,580 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 16:51:09,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 16:51:09,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 16:51:09,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 16:51:09,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 16:51:09,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 16:51:09,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 16:51:09,603 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 16:51:09,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 16:51:09,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 16:51:09,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 16:51:09,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 16:51:09,605 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 16:51:09,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 16:51:09,605 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 16:51:09,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 16:51:09,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 16:51:09,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 16:51:09,605 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 16:51:09,605 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 16:51:09,605 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 16:51:09,605 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 16:51:09,606 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 16:51:09,606 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 16:51:09,606 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 16:51:09,606 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 16:51:09,606 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 16:51:09,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 16:51:09,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 16:51:09,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 16:51:09,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 16:51:09,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:51:09,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 16:51:09,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 16:51:09,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 16:51:09,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 16:51:09,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 16:51:09,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 16:51:09,608 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 16:51:09,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 16:51:09,608 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2024-11-07 16:51:09,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 16:51:09,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 16:51:09,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 16:51:09,836 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 16:51:09,837 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 16:51:09,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-11-07 16:51:10,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 16:51:11,190 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 16:51:11,191 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-11-07 16:51:11,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/28137ab2b/f9434c6b0ed24bfe86775556289a5fc3/FLAG794307994 [2024-11-07 16:51:11,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/28137ab2b/f9434c6b0ed24bfe86775556289a5fc3 [2024-11-07 16:51:11,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 16:51:11,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 16:51:11,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 16:51:11,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 16:51:11,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 16:51:11,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d61b39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11, skipping insertion in model container [2024-11-07 16:51:11,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,233 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 16:51:11,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:51:11,360 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 16:51:11,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:51:11,389 INFO L204 MainTranslator]: Completed translation [2024-11-07 16:51:11,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11 WrapperNode [2024-11-07 16:51:11,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 16:51:11,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 16:51:11,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 16:51:11,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 16:51:11,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,412 INFO L138 Inliner]: procedures = 42, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2024-11-07 16:51:11,413 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 16:51:11,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 16:51:11,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 16:51:11,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 16:51:11,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,420 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,428 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 1, 10]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-07 16:51:11,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 16:51:11,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 16:51:11,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 16:51:11,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 16:51:11,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (1/1) ... [2024-11-07 16:51:11,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:51:11,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:11,460 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 16:51:11,462 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 16:51:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 16:51:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 16:51:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 16:51:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 16:51:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 16:51:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 16:51:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 16:51:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 16:51:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 16:51:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 16:51:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 16:51:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 16:51:11,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 16:51:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 16:51:11,539 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 16:51:11,541 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 16:51:11,795 INFO L? ?]: Removed 93 outVars from TransFormulas that were not future-live. [2024-11-07 16:51:11,796 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 16:51:11,804 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 16:51:11,804 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 16:51:11,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:51:11 BoogieIcfgContainer [2024-11-07 16:51:11,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 16:51:11,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 16:51:11,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 16:51:11,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 16:51:11,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:51:11" (1/3) ... [2024-11-07 16:51:11,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bb54a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:51:11, skipping insertion in model container [2024-11-07 16:51:11,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:11" (2/3) ... [2024-11-07 16:51:11,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bb54a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:51:11, skipping insertion in model container [2024-11-07 16:51:11,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:51:11" (3/3) ... [2024-11-07 16:51:11,812 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-11-07 16:51:11,821 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 16:51:11,821 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-07 16:51:11,856 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 16:51:11,864 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;@3a028749, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 16:51:11,864 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-07 16:51:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 55 states have (on average 1.8) internal successors, (99), 79 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:11,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-07 16:51:11,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:11,873 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-07 16:51:11,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:11,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:11,876 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-11-07 16:51:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516458723] [2024-11-07 16:51:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:11,991 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 16:51:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516458723] [2024-11-07 16:51:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516458723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:11,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:11,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:51:11,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325496383] [2024-11-07 16:51:11,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:11,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:51:11,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:51:12,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:51:12,016 INFO L87 Difference]: Start difference. First operand has 80 states, 55 states have (on average 1.8) internal successors, (99), 79 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:12,089 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2024-11-07 16:51:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:51:12,091 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-07 16:51:12,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:12,095 INFO L225 Difference]: With dead ends: 77 [2024-11-07 16:51:12,096 INFO L226 Difference]: Without dead ends: 75 [2024-11-07 16:51:12,097 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 16:51:12,098 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 76 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:12,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 64 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-07 16:51:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-07 16:51:12,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 74 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2024-11-07 16:51:12,127 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 4 [2024-11-07 16:51:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:12,128 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2024-11-07 16:51:12,128 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2024-11-07 16:51:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-07 16:51:12,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:12,128 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-07 16:51:12,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 16:51:12,128 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:12,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2024-11-07 16:51:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:12,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330518776] [2024-11-07 16:51:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:12,243 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 16:51:12,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330518776] [2024-11-07 16:51:12,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330518776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:12,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:12,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:51:12,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572468756] [2024-11-07 16:51:12,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:12,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:51:12,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:51:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:51:12,245 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:12,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:12,303 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-11-07 16:51:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:51:12,303 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-07 16:51:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:12,304 INFO L225 Difference]: With dead ends: 79 [2024-11-07 16:51:12,304 INFO L226 Difference]: Without dead ends: 79 [2024-11-07 16:51:12,304 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 16:51:12,305 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 2 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:12,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-07 16:51:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-07 16:51:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.6363636363636365) internal successors, (90), 76 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2024-11-07 16:51:12,313 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 4 [2024-11-07 16:51:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:12,313 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2024-11-07 16:51:12,313 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:12,314 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2024-11-07 16:51:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-07 16:51:12,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:12,314 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:12,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 16:51:12,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:12,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2024-11-07 16:51:12,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:12,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688800998] [2024-11-07 16:51:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:12,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:12,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688800998] [2024-11-07 16:51:12,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688800998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:12,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104431685] [2024-11-07 16:51:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:12,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:12,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:12,430 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 16:51:12,432 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 16:51:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:12,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 16:51:12,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:12,538 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 16:51:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:12,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:12,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104431685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:12,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:12,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 16:51:12,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253175462] [2024-11-07 16:51:12,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:12,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:51:12,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:12,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:51:12,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:51:12,656 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:12,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:12,749 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-11-07 16:51:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:51:12,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-07 16:51:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:12,750 INFO L225 Difference]: With dead ends: 89 [2024-11-07 16:51:12,752 INFO L226 Difference]: Without dead ends: 89 [2024-11-07 16:51:12,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:51:12,752 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 8 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:12,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 202 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-07 16:51:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-07 16:51:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 88 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2024-11-07 16:51:12,759 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 8 [2024-11-07 16:51:12,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:12,759 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2024-11-07 16:51:12,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2024-11-07 16:51:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 16:51:12,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:12,760 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 16:51:12,773 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 16:51:12,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:12,961 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:12,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -4646110, now seen corresponding path program 1 times [2024-11-07 16:51:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678816621] [2024-11-07 16:51:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:51:13,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:13,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678816621] [2024-11-07 16:51:13,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678816621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:13,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:13,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:51:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618089216] [2024-11-07 16:51:13,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:13,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:51:13,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:51:13,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:51:13,051 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:13,085 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2024-11-07 16:51:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:51:13,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-07 16:51:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:13,086 INFO L225 Difference]: With dead ends: 88 [2024-11-07 16:51:13,086 INFO L226 Difference]: Without dead ends: 88 [2024-11-07 16:51:13,086 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 16:51:13,087 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:13,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-07 16:51:13,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-07 16:51:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.537313432835821) internal successors, (103), 87 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2024-11-07 16:51:13,093 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 13 [2024-11-07 16:51:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:13,093 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2024-11-07 16:51:13,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:13,093 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2024-11-07 16:51:13,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:51:13,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:13,093 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:13,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 16:51:13,093 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:13,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash -108924891, now seen corresponding path program 1 times [2024-11-07 16:51:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:13,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904633760] [2024-11-07 16:51:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:51:13,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:13,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904633760] [2024-11-07 16:51:13,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904633760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:13,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:13,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:51:13,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739860464] [2024-11-07 16:51:13,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:13,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:51:13,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:13,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:51:13,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:51:13,175 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:13,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:13,220 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2024-11-07 16:51:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:51:13,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-07 16:51:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:13,221 INFO L225 Difference]: With dead ends: 88 [2024-11-07 16:51:13,221 INFO L226 Difference]: Without dead ends: 88 [2024-11-07 16:51:13,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:51:13,221 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 130 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:13,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 62 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-07 16:51:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-07 16:51:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 87 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:13,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2024-11-07 16:51:13,228 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 17 [2024-11-07 16:51:13,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:13,228 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2024-11-07 16:51:13,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2024-11-07 16:51:13,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:51:13,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:13,228 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:13,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 16:51:13,228 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:13,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash -108927737, now seen corresponding path program 1 times [2024-11-07 16:51:13,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:13,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638814267] [2024-11-07 16:51:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:13,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638814267] [2024-11-07 16:51:13,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638814267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118279275] [2024-11-07 16:51:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:13,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:13,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:13,300 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 16:51:13,301 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 16:51:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:13,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 16:51:13,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:13,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:13,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118279275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:13,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:13,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-07 16:51:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941788834] [2024-11-07 16:51:13,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:13,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 16:51:13,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 16:51:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:51:13,403 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:13,430 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2024-11-07 16:51:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:51:13,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-07 16:51:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:13,430 INFO L225 Difference]: With dead ends: 95 [2024-11-07 16:51:13,431 INFO L226 Difference]: Without dead ends: 95 [2024-11-07 16:51:13,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:51:13,431 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 6 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:13,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 243 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:13,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-07 16:51:13,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-07 16:51:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 94 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:13,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2024-11-07 16:51:13,434 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 17 [2024-11-07 16:51:13,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:13,434 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2024-11-07 16:51:13,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:13,434 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2024-11-07 16:51:13,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-07 16:51:13,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:13,434 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2024-11-07 16:51:13,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 16:51:13,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:13,636 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:13,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:13,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 2 times [2024-11-07 16:51:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:13,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755929135] [2024-11-07 16:51:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:13,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:13,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755929135] [2024-11-07 16:51:13,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755929135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668712709] [2024-11-07 16:51:13,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:51:13,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:13,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:13,777 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 16:51:13,778 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 16:51:13,830 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:51:13,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:13,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 16:51:13,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:13,838 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 16:51:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:13,998 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:51:13,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668712709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:13,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:51:13,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2024-11-07 16:51:13,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913989253] [2024-11-07 16:51:13,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:13,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:51:13,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:51:13,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:51:13,999 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:14,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:14,058 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2024-11-07 16:51:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:51:14,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-07 16:51:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:14,059 INFO L225 Difference]: With dead ends: 94 [2024-11-07 16:51:14,059 INFO L226 Difference]: Without dead ends: 94 [2024-11-07 16:51:14,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:51:14,061 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 2 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:14,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 205 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:14,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-07 16:51:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-07 16:51:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 93 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2024-11-07 16:51:14,063 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 20 [2024-11-07 16:51:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:14,064 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2024-11-07 16:51:14,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2024-11-07 16:51:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:51:14,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:14,067 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:14,079 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 16:51:14,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:14,271 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:14,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:14,271 INFO L85 PathProgramCache]: Analyzing trace with hash 150695803, now seen corresponding path program 2 times [2024-11-07 16:51:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:14,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053022029] [2024-11-07 16:51:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:14,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053022029] [2024-11-07 16:51:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053022029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988076309] [2024-11-07 16:51:14,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:51:14,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:14,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:14,369 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 16:51:14,370 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 16:51:14,414 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 16:51:14,414 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:14,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 16:51:14,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:14,422 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 16:51:14,473 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-07 16:51:14,473 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 16:51:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-07 16:51:14,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:51:14,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988076309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:14,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:51:14,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2024-11-07 16:51:14,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141986182] [2024-11-07 16:51:14,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:14,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:51:14,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:51:14,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:51:14,486 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:14,534 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2024-11-07 16:51:14,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:51:14,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-07 16:51:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:14,535 INFO L225 Difference]: With dead ends: 86 [2024-11-07 16:51:14,535 INFO L226 Difference]: Without dead ends: 86 [2024-11-07 16:51:14,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-07 16:51:14,535 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 114 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:14,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 56 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-07 16:51:14,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-07 16:51:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2024-11-07 16:51:14,538 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 33 [2024-11-07 16:51:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:14,538 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2024-11-07 16:51:14,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2024-11-07 16:51:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:51:14,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:14,539 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:14,551 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 16:51:14,739 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,SelfDestructingSolverStorable7 [2024-11-07 16:51:14,739 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:14,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash 150695804, now seen corresponding path program 1 times [2024-11-07 16:51:14,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:14,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775737412] [2024-11-07 16:51:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:14,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:14,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:14,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775737412] [2024-11-07 16:51:14,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775737412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:14,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492807093] [2024-11-07 16:51:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:14,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:14,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:14,842 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 16:51:14,843 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 16:51:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:14,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 16:51:14,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:14,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:51:15,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492807093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:15,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:15,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-07 16:51:15,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23250811] [2024-11-07 16:51:15,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:15,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 16:51:15,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:15,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 16:51:15,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:51:15,004 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:15,032 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2024-11-07 16:51:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:51:15,033 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-07 16:51:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:15,033 INFO L225 Difference]: With dead ends: 94 [2024-11-07 16:51:15,033 INFO L226 Difference]: Without dead ends: 94 [2024-11-07 16:51:15,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:51:15,034 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 3 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:15,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 362 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-07 16:51:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-07 16:51:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 82 states have (on average 1.2926829268292683) internal successors, (106), 93 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2024-11-07 16:51:15,036 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 33 [2024-11-07 16:51:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:15,036 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2024-11-07 16:51:15,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2024-11-07 16:51:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 16:51:15,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:15,037 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:15,049 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 16:51:15,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:15,237 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:15,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:15,238 INFO L85 PathProgramCache]: Analyzing trace with hash -629609034, now seen corresponding path program 2 times [2024-11-07 16:51:15,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:15,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948326297] [2024-11-07 16:51:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:15,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-07 16:51:15,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:15,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948326297] [2024-11-07 16:51:15,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948326297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:15,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:15,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:51:15,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192103077] [2024-11-07 16:51:15,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:15,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:51:15,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:15,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:51:15,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:15,469 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:15,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:15,536 INFO L93 Difference]: Finished difference Result 140 states and 170 transitions. [2024-11-07 16:51:15,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:51:15,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-07 16:51:15,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:15,537 INFO L225 Difference]: With dead ends: 140 [2024-11-07 16:51:15,537 INFO L226 Difference]: Without dead ends: 140 [2024-11-07 16:51:15,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:15,538 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 55 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:15,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 192 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-07 16:51:15,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2024-11-07 16:51:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 129 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-11-07 16:51:15,541 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 41 [2024-11-07 16:51:15,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:15,541 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-11-07 16:51:15,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-11-07 16:51:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 16:51:15,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:15,541 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:15,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 16:51:15,542 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:15,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:15,542 INFO L85 PathProgramCache]: Analyzing trace with hash -560573000, now seen corresponding path program 1 times [2024-11-07 16:51:15,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:15,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655584599] [2024-11-07 16:51:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:15,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:15,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655584599] [2024-11-07 16:51:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655584599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:15,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:15,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:51:15,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147076083] [2024-11-07 16:51:15,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:15,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:51:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:51:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:15,658 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:15,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:15,766 INFO L93 Difference]: Finished difference Result 204 states and 270 transitions. [2024-11-07 16:51:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:51:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-07 16:51:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:15,768 INFO L225 Difference]: With dead ends: 204 [2024-11-07 16:51:15,768 INFO L226 Difference]: Without dead ends: 204 [2024-11-07 16:51:15,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:51:15,769 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 94 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:15,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 296 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-07 16:51:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 153. [2024-11-07 16:51:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 152 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 193 transitions. [2024-11-07 16:51:15,773 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 193 transitions. Word has length 44 [2024-11-07 16:51:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:15,773 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 193 transitions. [2024-11-07 16:51:15,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 193 transitions. [2024-11-07 16:51:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:51:15,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:15,774 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:15,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 16:51:15,774 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:15,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:15,774 INFO L85 PathProgramCache]: Analyzing trace with hash 935128925, now seen corresponding path program 1 times [2024-11-07 16:51:15,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:15,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898146487] [2024-11-07 16:51:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:15,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-07 16:51:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898146487] [2024-11-07 16:51:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898146487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129905024] [2024-11-07 16:51:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:15,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:15,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:15,973 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 16:51:15,974 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 16:51:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:16,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 16:51:16,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:16,048 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 16:51:16,051 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 16:51:16,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:51:16,232 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 16:51:16,238 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:51:16,238 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 16:51:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:16,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:16,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129905024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:16,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:16,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2024-11-07 16:51:16,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669377600] [2024-11-07 16:51:16,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:16,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 16:51:16,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:16,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 16:51:16,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-07 16:51:16,826 INFO L87 Difference]: Start difference. First operand 153 states and 193 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:17,091 INFO L93 Difference]: Finished difference Result 343 states and 447 transitions. [2024-11-07 16:51:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:51:17,091 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-07 16:51:17,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:17,093 INFO L225 Difference]: With dead ends: 343 [2024-11-07 16:51:17,093 INFO L226 Difference]: Without dead ends: 343 [2024-11-07 16:51:17,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-07 16:51:17,094 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 679 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:17,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 728 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:51:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-07 16:51:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 311. [2024-11-07 16:51:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.4233333333333333) internal successors, (427), 310 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 427 transitions. [2024-11-07 16:51:17,101 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 427 transitions. Word has length 48 [2024-11-07 16:51:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:17,102 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 427 transitions. [2024-11-07 16:51:17,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 427 transitions. [2024-11-07 16:51:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 16:51:17,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:17,103 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:17,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 16:51:17,306 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,SelfDestructingSolverStorable11 [2024-11-07 16:51:17,307 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:17,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:17,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1535058889, now seen corresponding path program 1 times [2024-11-07 16:51:17,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:17,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170915992] [2024-11-07 16:51:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:17,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-07 16:51:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170915992] [2024-11-07 16:51:17,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170915992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283742700] [2024-11-07 16:51:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:17,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:17,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:17,480 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 16:51:17,482 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 16:51:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:17,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 16:51:17,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:17,556 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 16:51:17,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:51:17,656 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 16:51:17,663 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:51:17,663 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 16:51:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:17,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:17,820 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 29 treesize of output 25 [2024-11-07 16:51:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:17,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283742700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:17,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:17,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-07 16:51:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833074231] [2024-11-07 16:51:17,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:17,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 16:51:17,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 16:51:17,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-07 16:51:17,920 INFO L87 Difference]: Start difference. First operand 311 states and 427 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:18,156 INFO L93 Difference]: Finished difference Result 841 states and 1236 transitions. [2024-11-07 16:51:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:51:18,158 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-07 16:51:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:18,160 INFO L225 Difference]: With dead ends: 841 [2024-11-07 16:51:18,160 INFO L226 Difference]: Without dead ends: 841 [2024-11-07 16:51:18,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2024-11-07 16:51:18,161 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 600 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:18,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 510 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:51:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2024-11-07 16:51:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 369. [2024-11-07 16:51:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 360 states have (on average 1.3805555555555555) internal successors, (497), 368 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 497 transitions. [2024-11-07 16:51:18,175 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 497 transitions. Word has length 48 [2024-11-07 16:51:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:18,175 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 497 transitions. [2024-11-07 16:51:18,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 497 transitions. [2024-11-07 16:51:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-07 16:51:18,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:18,176 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:18,188 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 16:51:18,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:18,377 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:18,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1075688002, now seen corresponding path program 1 times [2024-11-07 16:51:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675096775] [2024-11-07 16:51:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:18,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:18,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675096775] [2024-11-07 16:51:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675096775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:18,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:51:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566437080] [2024-11-07 16:51:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:18,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:51:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:51:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:18,443 INFO L87 Difference]: Start difference. First operand 369 states and 497 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:18,498 INFO L93 Difference]: Finished difference Result 385 states and 508 transitions. [2024-11-07 16:51:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:51:18,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-07 16:51:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:18,499 INFO L225 Difference]: With dead ends: 385 [2024-11-07 16:51:18,499 INFO L226 Difference]: Without dead ends: 385 [2024-11-07 16:51:18,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:51:18,500 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 2 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:18,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 279 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-07 16:51:18,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 381. [2024-11-07 16:51:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 372 states have (on average 1.3548387096774193) internal successors, (504), 380 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 504 transitions. [2024-11-07 16:51:18,508 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 504 transitions. Word has length 49 [2024-11-07 16:51:18,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:18,509 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 504 transitions. [2024-11-07 16:51:18,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 504 transitions. [2024-11-07 16:51:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-07 16:51:18,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:18,509 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:18,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 16:51:18,509 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:18,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash -924079407, now seen corresponding path program 1 times [2024-11-07 16:51:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121733948] [2024-11-07 16:51:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:18,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:18,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121733948] [2024-11-07 16:51:18,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121733948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:18,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:18,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:51:18,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351906663] [2024-11-07 16:51:18,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:18,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:51:18,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:18,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:51:18,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:51:18,549 INFO L87 Difference]: Start difference. First operand 381 states and 504 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:18,557 INFO L93 Difference]: Finished difference Result 401 states and 524 transitions. [2024-11-07 16:51:18,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:51:18,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-07 16:51:18,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:18,559 INFO L225 Difference]: With dead ends: 401 [2024-11-07 16:51:18,559 INFO L226 Difference]: Without dead ends: 401 [2024-11-07 16:51:18,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:51:18,559 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:18,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-07 16:51:18,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2024-11-07 16:51:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 392 states have (on average 1.336734693877551) internal successors, (524), 400 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 524 transitions. [2024-11-07 16:51:18,571 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 524 transitions. Word has length 53 [2024-11-07 16:51:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:18,571 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 524 transitions. [2024-11-07 16:51:18,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 524 transitions. [2024-11-07 16:51:18,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-07 16:51:18,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:18,572 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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 16:51:18,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 16:51:18,572 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:18,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1294883028, now seen corresponding path program 1 times [2024-11-07 16:51:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:18,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862405898] [2024-11-07 16:51:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:18,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:18,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862405898] [2024-11-07 16:51:18,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862405898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:18,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:18,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:51:18,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942116332] [2024-11-07 16:51:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:18,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:51:18,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:18,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:51:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:18,646 INFO L87 Difference]: Start difference. First operand 401 states and 524 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:18,710 INFO L93 Difference]: Finished difference Result 409 states and 522 transitions. [2024-11-07 16:51:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:51:18,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-07 16:51:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:18,712 INFO L225 Difference]: With dead ends: 409 [2024-11-07 16:51:18,712 INFO L226 Difference]: Without dead ends: 409 [2024-11-07 16:51:18,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:51:18,713 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:18,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 270 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-07 16:51:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 399. [2024-11-07 16:51:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 390 states have (on average 1.3256410256410256) internal successors, (517), 398 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 517 transitions. [2024-11-07 16:51:18,721 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 517 transitions. Word has length 55 [2024-11-07 16:51:18,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:18,722 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 517 transitions. [2024-11-07 16:51:18,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 517 transitions. [2024-11-07 16:51:18,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-07 16:51:18,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:18,722 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 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 16:51:18,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 16:51:18,722 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:18,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:18,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1552311941, now seen corresponding path program 1 times [2024-11-07 16:51:18,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:18,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744335308] [2024-11-07 16:51:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:18,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:18,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:18,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744335308] [2024-11-07 16:51:18,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744335308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:18,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:18,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:51:18,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511164400] [2024-11-07 16:51:18,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:18,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:51:18,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:18,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:51:18,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:51:18,786 INFO L87 Difference]: Start difference. First operand 399 states and 517 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:18,830 INFO L93 Difference]: Finished difference Result 442 states and 575 transitions. [2024-11-07 16:51:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:51:18,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-07 16:51:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:18,832 INFO L225 Difference]: With dead ends: 442 [2024-11-07 16:51:18,832 INFO L226 Difference]: Without dead ends: 442 [2024-11-07 16:51:18,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:18,832 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 14 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:18,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 220 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:18,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-07 16:51:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 409. [2024-11-07 16:51:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 400 states have (on average 1.31) internal successors, (524), 408 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 524 transitions. [2024-11-07 16:51:18,839 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 524 transitions. Word has length 58 [2024-11-07 16:51:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:18,839 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 524 transitions. [2024-11-07 16:51:18,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 524 transitions. [2024-11-07 16:51:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-07 16:51:18,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:18,840 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:18,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 16:51:18,840 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:18,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:18,840 INFO L85 PathProgramCache]: Analyzing trace with hash 568191740, now seen corresponding path program 2 times [2024-11-07 16:51:18,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:18,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685996863] [2024-11-07 16:51:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:18,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-07 16:51:19,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685996863] [2024-11-07 16:51:19,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685996863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457810985] [2024-11-07 16:51:19,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:51:19,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:19,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:19,076 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 16:51:19,078 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 16:51:19,148 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:51:19,149 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:19,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 16:51:19,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-07 16:51:19,295 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:51:19,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457810985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:19,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:51:19,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 17 [2024-11-07 16:51:19,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250422118] [2024-11-07 16:51:19,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:19,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:51:19,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:19,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:51:19,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-11-07 16:51:19,296 INFO L87 Difference]: Start difference. First operand 409 states and 524 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:19,511 INFO L93 Difference]: Finished difference Result 428 states and 546 transitions. [2024-11-07 16:51:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:51:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-07 16:51:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:19,512 INFO L225 Difference]: With dead ends: 428 [2024-11-07 16:51:19,512 INFO L226 Difference]: Without dead ends: 428 [2024-11-07 16:51:19,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:51:19,513 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 57 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:19,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 510 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-07 16:51:19,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 408. [2024-11-07 16:51:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 399 states have (on average 1.3082706766917294) internal successors, (522), 407 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 522 transitions. [2024-11-07 16:51:19,520 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 522 transitions. Word has length 60 [2024-11-07 16:51:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:19,520 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 522 transitions. [2024-11-07 16:51:19,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:19,520 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 522 transitions. [2024-11-07 16:51:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-07 16:51:19,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:19,521 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 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 16:51:19,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-07 16:51:19,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 16:51:19,721 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:19,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:19,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1018128091, now seen corresponding path program 1 times [2024-11-07 16:51:19,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:19,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108587127] [2024-11-07 16:51:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:19,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-07 16:51:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108587127] [2024-11-07 16:51:19,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108587127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:19,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:19,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:51:19,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113233632] [2024-11-07 16:51:19,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:19,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:51:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:51:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:19,907 INFO L87 Difference]: Start difference. First operand 408 states and 522 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:19,952 INFO L93 Difference]: Finished difference Result 407 states and 521 transitions. [2024-11-07 16:51:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:51:19,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-07 16:51:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:19,953 INFO L225 Difference]: With dead ends: 407 [2024-11-07 16:51:19,953 INFO L226 Difference]: Without dead ends: 404 [2024-11-07 16:51:19,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:19,954 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 37 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:19,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 158 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:19,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-07 16:51:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2024-11-07 16:51:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 384 states have (on average 1.28125) internal successors, (492), 391 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 492 transitions. [2024-11-07 16:51:19,961 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 492 transitions. Word has length 61 [2024-11-07 16:51:19,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:19,961 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 492 transitions. [2024-11-07 16:51:19,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:19,961 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 492 transitions. [2024-11-07 16:51:19,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-07 16:51:19,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:19,962 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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 16:51:19,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 16:51:19,962 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:19,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash 44185747, now seen corresponding path program 1 times [2024-11-07 16:51:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:19,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950859780] [2024-11-07 16:51:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:20,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:20,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950859780] [2024-11-07 16:51:20,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950859780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:20,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281251964] [2024-11-07 16:51:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:20,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:20,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:20,030 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 16:51:20,031 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 16:51:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:20,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 16:51:20,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:20,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:20,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281251964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:20,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:20,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-07 16:51:20,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659879037] [2024-11-07 16:51:20,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:20,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:51:20,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:20,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:51:20,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:51:20,161 INFO L87 Difference]: Start difference. First operand 392 states and 492 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:20,235 INFO L93 Difference]: Finished difference Result 394 states and 478 transitions. [2024-11-07 16:51:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:51:20,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-07 16:51:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:20,236 INFO L225 Difference]: With dead ends: 394 [2024-11-07 16:51:20,236 INFO L226 Difference]: Without dead ends: 394 [2024-11-07 16:51:20,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:51:20,237 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 95 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:20,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 312 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-07 16:51:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 380. [2024-11-07 16:51:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 372 states have (on average 1.2688172043010753) internal successors, (472), 379 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 472 transitions. [2024-11-07 16:51:20,242 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 472 transitions. Word has length 62 [2024-11-07 16:51:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:20,242 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 472 transitions. [2024-11-07 16:51:20,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 472 transitions. [2024-11-07 16:51:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-07 16:51:20,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:20,242 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:20,255 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 16:51:20,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:20,443 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:20,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash -779132351, now seen corresponding path program 1 times [2024-11-07 16:51:20,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:20,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683791907] [2024-11-07 16:51:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-07 16:51:20,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683791907] [2024-11-07 16:51:20,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683791907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579730182] [2024-11-07 16:51:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:20,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:20,659 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 16:51:20,660 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 16:51:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:20,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 16:51:20,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:20,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 16:51:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-07 16:51:20,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:51:20,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579730182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:20,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:51:20,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2024-11-07 16:51:20,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259620212] [2024-11-07 16:51:20,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:20,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 16:51:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:20,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 16:51:20,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-07 16:51:20,833 INFO L87 Difference]: Start difference. First operand 380 states and 472 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:20,978 INFO L93 Difference]: Finished difference Result 376 states and 461 transitions. [2024-11-07 16:51:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:51:20,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-07 16:51:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:20,979 INFO L225 Difference]: With dead ends: 376 [2024-11-07 16:51:20,979 INFO L226 Difference]: Without dead ends: 376 [2024-11-07 16:51:20,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-07 16:51:20,980 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 54 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:20,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 434 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-07 16:51:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 358. [2024-11-07 16:51:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 350 states have (on average 1.262857142857143) internal successors, (442), 357 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 442 transitions. [2024-11-07 16:51:20,985 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 442 transitions. Word has length 62 [2024-11-07 16:51:20,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:20,985 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 442 transitions. [2024-11-07 16:51:20,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:20,985 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 442 transitions. [2024-11-07 16:51:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-07 16:51:20,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:20,986 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:20,998 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 16:51:21,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:21,187 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:21,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:21,187 INFO L85 PathProgramCache]: Analyzing trace with hash -937242689, now seen corresponding path program 1 times [2024-11-07 16:51:21,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:21,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082386355] [2024-11-07 16:51:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:21,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:21,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:21,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082386355] [2024-11-07 16:51:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082386355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:51:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066127102] [2024-11-07 16:51:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:21,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:51:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:21,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:51:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:51:21,236 INFO L87 Difference]: Start difference. First operand 358 states and 442 transitions. Second operand has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:21,250 INFO L93 Difference]: Finished difference Result 357 states and 437 transitions. [2024-11-07 16:51:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:51:21,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-07 16:51:21,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:21,252 INFO L225 Difference]: With dead ends: 357 [2024-11-07 16:51:21,252 INFO L226 Difference]: Without dead ends: 357 [2024-11-07 16:51:21,252 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 16:51:21,253 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:21,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 61 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:21,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-07 16:51:21,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-11-07 16:51:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 350 states have (on average 1.2485714285714287) internal successors, (437), 356 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 437 transitions. [2024-11-07 16:51:21,258 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 437 transitions. Word has length 64 [2024-11-07 16:51:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:21,258 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 437 transitions. [2024-11-07 16:51:21,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 437 transitions. [2024-11-07 16:51:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-07 16:51:21,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:21,259 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:21,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 16:51:21,259 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:21,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash -937242688, now seen corresponding path program 1 times [2024-11-07 16:51:21,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:21,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884697379] [2024-11-07 16:51:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:21,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:21,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:21,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884697379] [2024-11-07 16:51:21,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884697379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:21,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:21,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:51:21,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756816877] [2024-11-07 16:51:21,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:21,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:51:21,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:51:21,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:21,325 INFO L87 Difference]: Start difference. First operand 357 states and 437 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:21,415 INFO L93 Difference]: Finished difference Result 601 states and 749 transitions. [2024-11-07 16:51:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:51:21,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-07 16:51:21,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:21,417 INFO L225 Difference]: With dead ends: 601 [2024-11-07 16:51:21,417 INFO L226 Difference]: Without dead ends: 568 [2024-11-07 16:51:21,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:51:21,418 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 83 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:21,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 316 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-07 16:51:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 426. [2024-11-07 16:51:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 419 states have (on average 1.269689737470167) internal successors, (532), 425 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 532 transitions. [2024-11-07 16:51:21,426 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 532 transitions. Word has length 64 [2024-11-07 16:51:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:21,426 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 532 transitions. [2024-11-07 16:51:21,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 532 transitions. [2024-11-07 16:51:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-07 16:51:21,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:21,427 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:21,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 16:51:21,427 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:21,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:21,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1948359938, now seen corresponding path program 1 times [2024-11-07 16:51:21,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:21,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680213776] [2024-11-07 16:51:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:21,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:21,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:21,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680213776] [2024-11-07 16:51:21,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680213776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:21,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:51:21,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460364449] [2024-11-07 16:51:21,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:21,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:51:21,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:21,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:51:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:51:21,483 INFO L87 Difference]: Start difference. First operand 426 states and 532 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:21,535 INFO L93 Difference]: Finished difference Result 404 states and 502 transitions. [2024-11-07 16:51:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:51:21,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-07 16:51:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:21,536 INFO L225 Difference]: With dead ends: 404 [2024-11-07 16:51:21,536 INFO L226 Difference]: Without dead ends: 388 [2024-11-07 16:51:21,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:21,537 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:21,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 160 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:21,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-07 16:51:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-11-07 16:51:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 381 states have (on average 1.2755905511811023) internal successors, (486), 387 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 486 transitions. [2024-11-07 16:51:21,542 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 486 transitions. Word has length 64 [2024-11-07 16:51:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:21,542 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 486 transitions. [2024-11-07 16:51:21,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:21,542 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 486 transitions. [2024-11-07 16:51:21,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-07 16:51:21,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:21,543 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:21,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 16:51:21,543 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:21,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1384325621, now seen corresponding path program 1 times [2024-11-07 16:51:21,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:21,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496304844] [2024-11-07 16:51:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:21,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-07 16:51:21,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:21,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496304844] [2024-11-07 16:51:21,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496304844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:21,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560133706] [2024-11-07 16:51:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:21,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:21,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:21,766 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 16:51:21,767 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 16:51:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:21,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 16:51:21,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:21,974 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 19 treesize of output 7 [2024-11-07 16:51:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-07 16:51:22,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:22,110 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-07 16:51:22,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2024-11-07 16:51:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-07 16:51:22,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560133706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:22,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:22,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2024-11-07 16:51:22,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129012882] [2024-11-07 16:51:22,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:22,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 16:51:22,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 16:51:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2024-11-07 16:51:22,170 INFO L87 Difference]: Start difference. First operand 388 states and 486 transitions. Second operand has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:23,529 INFO L93 Difference]: Finished difference Result 1223 states and 1608 transitions. [2024-11-07 16:51:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-07 16:51:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-07 16:51:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:23,532 INFO L225 Difference]: With dead ends: 1223 [2024-11-07 16:51:23,532 INFO L226 Difference]: Without dead ends: 1223 [2024-11-07 16:51:23,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2024-11-07 16:51:23,533 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 518 mSDsluCounter, 3960 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:23,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 4211 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-07 16:51:23,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2024-11-07 16:51:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 466. [2024-11-07 16:51:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 459 states have (on average 1.2701525054466232) internal successors, (583), 465 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:23,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 583 transitions. [2024-11-07 16:51:23,542 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 583 transitions. Word has length 67 [2024-11-07 16:51:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:23,542 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 583 transitions. [2024-11-07 16:51:23,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 583 transitions. [2024-11-07 16:51:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-07 16:51:23,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:23,543 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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] [2024-11-07 16:51:23,555 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 16:51:23,743 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,SelfDestructingSolverStorable24 [2024-11-07 16:51:23,743 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:23,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1630169780, now seen corresponding path program 2 times [2024-11-07 16:51:23,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:23,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528806195] [2024-11-07 16:51:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:23,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-07 16:51:23,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528806195] [2024-11-07 16:51:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528806195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220575073] [2024-11-07 16:51:23,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:51:23,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:23,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:23,861 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 16:51:23,862 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 16:51:23,933 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 16:51:23,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:23,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 16:51:23,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-07 16:51:24,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:51:24,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220575073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:24,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:51:24,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-11-07 16:51:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234923220] [2024-11-07 16:51:24,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:24,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:51:24,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:51:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-07 16:51:24,044 INFO L87 Difference]: Start difference. First operand 466 states and 583 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:24,221 INFO L93 Difference]: Finished difference Result 633 states and 775 transitions. [2024-11-07 16:51:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:51:24,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-07 16:51:24,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:24,223 INFO L225 Difference]: With dead ends: 633 [2024-11-07 16:51:24,223 INFO L226 Difference]: Without dead ends: 624 [2024-11-07 16:51:24,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:51:24,223 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 223 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:24,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 223 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-07 16:51:24,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 520. [2024-11-07 16:51:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 513 states have (on average 1.253411306042885) internal successors, (643), 519 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:24,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 643 transitions. [2024-11-07 16:51:24,232 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 643 transitions. Word has length 69 [2024-11-07 16:51:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:24,233 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 643 transitions. [2024-11-07 16:51:24,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 643 transitions. [2024-11-07 16:51:24,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-07 16:51:24,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:24,235 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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 16:51:24,248 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 16:51:24,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:24,436 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:24,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash -391285385, now seen corresponding path program 1 times [2024-11-07 16:51:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:24,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110141700] [2024-11-07 16:51:24,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:24,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:24,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:24,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110141700] [2024-11-07 16:51:24,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110141700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:24,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868619167] [2024-11-07 16:51:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:24,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:24,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:24,560 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 16:51:24,561 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 16:51:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:24,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 16:51:24,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:24,658 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 16:51:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:24,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:51:24,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868619167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:24,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:51:24,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-07 16:51:24,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406336430] [2024-11-07 16:51:24,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:24,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:51:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:51:24,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-07 16:51:24,878 INFO L87 Difference]: Start difference. First operand 520 states and 643 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:25,021 INFO L93 Difference]: Finished difference Result 614 states and 747 transitions. [2024-11-07 16:51:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:51:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-07 16:51:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:25,022 INFO L225 Difference]: With dead ends: 614 [2024-11-07 16:51:25,022 INFO L226 Difference]: Without dead ends: 614 [2024-11-07 16:51:25,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-07 16:51:25,023 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 75 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:25,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 316 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:25,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-07 16:51:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 550. [2024-11-07 16:51:25,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 543 states have (on average 1.2430939226519337) internal successors, (675), 549 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 675 transitions. [2024-11-07 16:51:25,030 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 675 transitions. Word has length 71 [2024-11-07 16:51:25,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:25,030 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 675 transitions. [2024-11-07 16:51:25,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:25,030 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 675 transitions. [2024-11-07 16:51:25,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-07 16:51:25,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:25,033 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:25,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-07 16:51:25,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:25,234 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:25,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:25,234 INFO L85 PathProgramCache]: Analyzing trace with hash 754653992, now seen corresponding path program 1 times [2024-11-07 16:51:25,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:25,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601927251] [2024-11-07 16:51:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:25,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-07 16:51:25,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601927251] [2024-11-07 16:51:25,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601927251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:25,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:25,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:51:25,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686144299] [2024-11-07 16:51:25,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:25,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:51:25,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:25,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:51:25,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:51:25,320 INFO L87 Difference]: Start difference. First operand 550 states and 675 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:25,409 INFO L93 Difference]: Finished difference Result 553 states and 671 transitions. [2024-11-07 16:51:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:51:25,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-07 16:51:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:25,410 INFO L225 Difference]: With dead ends: 553 [2024-11-07 16:51:25,410 INFO L226 Difference]: Without dead ends: 553 [2024-11-07 16:51:25,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:51:25,411 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 46 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:25,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 246 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-07 16:51:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 546. [2024-11-07 16:51:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 540 states have (on average 1.2314814814814814) internal successors, (665), 545 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 665 transitions. [2024-11-07 16:51:25,418 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 665 transitions. Word has length 72 [2024-11-07 16:51:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:25,418 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 665 transitions. [2024-11-07 16:51:25,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 665 transitions. [2024-11-07 16:51:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-07 16:51:25,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:25,419 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:25,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-07 16:51:25,420 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:25,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash 214271563, now seen corresponding path program 1 times [2024-11-07 16:51:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:25,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482504146] [2024-11-07 16:51:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:25,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-07 16:51:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:25,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482504146] [2024-11-07 16:51:25,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482504146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:25,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632284887] [2024-11-07 16:51:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:25,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:25,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:25,638 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 16:51:25,639 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 16:51:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:25,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 16:51:25,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:25,861 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 19 treesize of output 7 [2024-11-07 16:51:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-07 16:51:25,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:25,988 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-07 16:51:25,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2024-11-07 16:51:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-07 16:51:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632284887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:26,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:26,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-11-07 16:51:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696278240] [2024-11-07 16:51:26,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:26,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 16:51:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:26,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 16:51:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:51:26,046 INFO L87 Difference]: Start difference. First operand 546 states and 665 transitions. Second operand has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:27,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:27,303 INFO L93 Difference]: Finished difference Result 1257 states and 1582 transitions. [2024-11-07 16:51:27,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-07 16:51:27,304 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-07 16:51:27,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:27,306 INFO L225 Difference]: With dead ends: 1257 [2024-11-07 16:51:27,306 INFO L226 Difference]: Without dead ends: 1250 [2024-11-07 16:51:27,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2024-11-07 16:51:27,307 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 534 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:27,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 4928 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 16:51:27,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2024-11-07 16:51:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 547. [2024-11-07 16:51:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 541 states have (on average 1.2310536044362292) internal successors, (666), 546 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 666 transitions. [2024-11-07 16:51:27,321 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 666 transitions. Word has length 73 [2024-11-07 16:51:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:27,322 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 666 transitions. [2024-11-07 16:51:27,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 666 transitions. [2024-11-07 16:51:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-07 16:51:27,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:27,322 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:27,335 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 16:51:27,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-07 16:51:27,523 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:27,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:27,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1990946019, now seen corresponding path program 2 times [2024-11-07 16:51:27,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:27,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705455244] [2024-11-07 16:51:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 15 proven. 80 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-07 16:51:27,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705455244] [2024-11-07 16:51:27,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705455244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020212894] [2024-11-07 16:51:27,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:51:27,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:27,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:27,744 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 16:51:27,745 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 16:51:27,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:51:27,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:27,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-07 16:51:27,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:27,849 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 16:51:27,857 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 16:51:27,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:51:27,975 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 16:51:27,980 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:51:27,980 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 16:51:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:28,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:28,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020212894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:28,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:28,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-11-07 16:51:28,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691388937] [2024-11-07 16:51:28,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:28,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 16:51:28,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:28,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 16:51:28,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-07 16:51:28,648 INFO L87 Difference]: Start difference. First operand 547 states and 666 transitions. Second operand has 26 states, 25 states have (on average 5.48) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:29,042 INFO L93 Difference]: Finished difference Result 1197 states and 1478 transitions. [2024-11-07 16:51:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 16:51:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.48) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-07 16:51:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:29,045 INFO L225 Difference]: With dead ends: 1197 [2024-11-07 16:51:29,045 INFO L226 Difference]: Without dead ends: 1197 [2024-11-07 16:51:29,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2024-11-07 16:51:29,046 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 768 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:29,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1694 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:51:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-07 16:51:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1191. [2024-11-07 16:51:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1185 states have (on average 1.2472573839662446) internal successors, (1478), 1190 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:29,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1478 transitions. [2024-11-07 16:51:29,059 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1478 transitions. Word has length 76 [2024-11-07 16:51:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:29,059 INFO L471 AbstractCegarLoop]: Abstraction has 1191 states and 1478 transitions. [2024-11-07 16:51:29,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.48) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:29,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1478 transitions. [2024-11-07 16:51:29,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-07 16:51:29,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:29,060 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:29,074 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 16:51:29,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:29,265 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:29,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 98625707, now seen corresponding path program 1 times [2024-11-07 16:51:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:29,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658704540] [2024-11-07 16:51:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:29,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-07 16:51:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658704540] [2024-11-07 16:51:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658704540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:29,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:51:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906613098] [2024-11-07 16:51:29,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:29,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:51:29,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:51:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:29,324 INFO L87 Difference]: Start difference. First operand 1191 states and 1478 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:29,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:29,366 INFO L93 Difference]: Finished difference Result 818 states and 978 transitions. [2024-11-07 16:51:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:51:29,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-07 16:51:29,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:29,368 INFO L225 Difference]: With dead ends: 818 [2024-11-07 16:51:29,368 INFO L226 Difference]: Without dead ends: 590 [2024-11-07 16:51:29,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:51:29,368 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 36 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:29,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-07 16:51:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 176. [2024-11-07 16:51:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 173 states have (on average 1.1560693641618498) internal successors, (200), 175 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 200 transitions. [2024-11-07 16:51:29,372 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 200 transitions. Word has length 80 [2024-11-07 16:51:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:29,372 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 200 transitions. [2024-11-07 16:51:29,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 200 transitions. [2024-11-07 16:51:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-07 16:51:29,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:29,373 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:29,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-07 16:51:29,373 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:29,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash 492345470, now seen corresponding path program 2 times [2024-11-07 16:51:29,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288735632] [2024-11-07 16:51:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 15 proven. 66 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:29,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:29,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288735632] [2024-11-07 16:51:29,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288735632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:29,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024645631] [2024-11-07 16:51:29,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:51:29,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:29,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:29,601 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 16:51:29,602 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 16:51:29,719 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:51:29,720 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:29,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 16:51:29,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-07 16:51:29,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:30,110 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-07 16:51:30,110 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 22 treesize of output 14 [2024-11-07 16:51:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-07 16:51:30,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024645631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:30,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:30,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 13] total 33 [2024-11-07 16:51:30,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376721543] [2024-11-07 16:51:30,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:30,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-07 16:51:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:30,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-07 16:51:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=976, Unknown=0, NotChecked=0, Total=1056 [2024-11-07 16:51:30,198 INFO L87 Difference]: Start difference. First operand 176 states and 200 transitions. Second operand has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:31,114 INFO L93 Difference]: Finished difference Result 434 states and 514 transitions. [2024-11-07 16:51:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 16:51:31,114 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-07 16:51:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:31,115 INFO L225 Difference]: With dead ends: 434 [2024-11-07 16:51:31,115 INFO L226 Difference]: Without dead ends: 434 [2024-11-07 16:51:31,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2024-11-07 16:51:31,116 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 498 mSDsluCounter, 3926 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 4088 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:31,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 4088 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 16:51:31,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-07 16:51:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 200. [2024-11-07 16:51:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 197 states have (on average 1.16751269035533) internal successors, (230), 199 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 230 transitions. [2024-11-07 16:51:31,119 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 230 transitions. Word has length 82 [2024-11-07 16:51:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:31,119 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 230 transitions. [2024-11-07 16:51:31,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 230 transitions. [2024-11-07 16:51:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-07 16:51:31,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:31,120 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:31,134 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 16:51:31,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:31,320 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:31,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1383026470, now seen corresponding path program 1 times [2024-11-07 16:51:31,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:31,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659171974] [2024-11-07 16:51:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:31,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-07 16:51:31,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:31,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659171974] [2024-11-07 16:51:31,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659171974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:31,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:31,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:51:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685180112] [2024-11-07 16:51:31,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:31,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:51:31,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:51:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:51:31,352 INFO L87 Difference]: Start difference. First operand 200 states and 230 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:31,361 INFO L93 Difference]: Finished difference Result 202 states and 232 transitions. [2024-11-07 16:51:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:51:31,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-07 16:51:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:31,362 INFO L225 Difference]: With dead ends: 202 [2024-11-07 16:51:31,362 INFO L226 Difference]: Without dead ends: 202 [2024-11-07 16:51:31,362 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 16:51:31,362 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:31,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:31,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-07 16:51:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-11-07 16:51:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 199 states have (on average 1.1658291457286432) internal successors, (232), 201 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2024-11-07 16:51:31,365 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 82 [2024-11-07 16:51:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:31,365 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2024-11-07 16:51:31,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2024-11-07 16:51:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-07 16:51:31,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:31,366 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:31,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-07 16:51:31,366 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:31,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1994561461, now seen corresponding path program 1 times [2024-11-07 16:51:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64762397] [2024-11-07 16:51:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-07 16:51:31,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:31,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64762397] [2024-11-07 16:51:31,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64762397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:31,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:51:31,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:51:31,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236489864] [2024-11-07 16:51:31,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:31,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:51:31,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:31,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:51:31,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:51:31,419 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:31,443 INFO L93 Difference]: Finished difference Result 207 states and 236 transitions. [2024-11-07 16:51:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:51:31,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-07 16:51:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:31,444 INFO L225 Difference]: With dead ends: 207 [2024-11-07 16:51:31,444 INFO L226 Difference]: Without dead ends: 207 [2024-11-07 16:51:31,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:51:31,444 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:31,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 164 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-07 16:51:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2024-11-07 16:51:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 198 states have (on average 1.1616161616161615) internal successors, (230), 200 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2024-11-07 16:51:31,446 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 84 [2024-11-07 16:51:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:31,446 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2024-11-07 16:51:31,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2024-11-07 16:51:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-07 16:51:31,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:31,447 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:31,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-07 16:51:31,447 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:31,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash -24694026, now seen corresponding path program 1 times [2024-11-07 16:51:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:31,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066472539] [2024-11-07 16:51:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:31,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066472539] [2024-11-07 16:51:31,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066472539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011221986] [2024-11-07 16:51:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:31,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:31,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:31,548 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 16:51:31,561 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 16:51:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:31,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 16:51:31,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:31,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011221986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:31,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-11-07 16:51:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554727612] [2024-11-07 16:51:31,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:31,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 16:51:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 16:51:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-07 16:51:31,889 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:32,092 INFO L93 Difference]: Finished difference Result 351 states and 406 transitions. [2024-11-07 16:51:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 16:51:32,093 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-07 16:51:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:32,093 INFO L225 Difference]: With dead ends: 351 [2024-11-07 16:51:32,093 INFO L226 Difference]: Without dead ends: 258 [2024-11-07 16:51:32,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 158 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:51:32,097 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 170 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:32,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 533 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:32,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-07 16:51:32,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2024-11-07 16:51:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 245 states have (on average 1.1510204081632653) internal successors, (282), 247 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 282 transitions. [2024-11-07 16:51:32,099 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 282 transitions. Word has length 86 [2024-11-07 16:51:32,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:32,099 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 282 transitions. [2024-11-07 16:51:32,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:32,099 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 282 transitions. [2024-11-07 16:51:32,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-07 16:51:32,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:32,100 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:32,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-07 16:51:32,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:32,302 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:32,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:32,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1750313336, now seen corresponding path program 1 times [2024-11-07 16:51:32,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:32,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171973524] [2024-11-07 16:51:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:32,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:32,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171973524] [2024-11-07 16:51:32,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171973524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296811177] [2024-11-07 16:51:32,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:32,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:32,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:32,513 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 16:51:32,515 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 16:51:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:32,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 16:51:32,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:32,630 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 16:51:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:32,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:33,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296811177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:33,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:33,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-07 16:51:33,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928208135] [2024-11-07 16:51:33,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:33,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 16:51:33,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:33,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 16:51:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-11-07 16:51:33,218 INFO L87 Difference]: Start difference. First operand 248 states and 282 transitions. Second operand has 26 states, 25 states have (on average 6.24) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:33,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:33,402 INFO L93 Difference]: Finished difference Result 254 states and 287 transitions. [2024-11-07 16:51:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:51:33,402 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 6.24) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-07 16:51:33,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:33,403 INFO L225 Difference]: With dead ends: 254 [2024-11-07 16:51:33,403 INFO L226 Difference]: Without dead ends: 229 [2024-11-07 16:51:33,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2024-11-07 16:51:33,403 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 97 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:33,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 458 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:33,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-07 16:51:33,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2024-11-07 16:51:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 224 states have (on average 1.15625) internal successors, (259), 226 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 259 transitions. [2024-11-07 16:51:33,405 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 259 transitions. Word has length 86 [2024-11-07 16:51:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:33,405 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 259 transitions. [2024-11-07 16:51:33,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 6.24) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:33,405 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 259 transitions. [2024-11-07 16:51:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-07 16:51:33,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:33,406 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:33,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-07 16:51:33,606 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,SelfDestructingSolverStorable35 [2024-11-07 16:51:33,607 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:33,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1166788564, now seen corresponding path program 2 times [2024-11-07 16:51:33,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:33,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792267514] [2024-11-07 16:51:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:33,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 91 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792267514] [2024-11-07 16:51:33,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792267514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684109793] [2024-11-07 16:51:33,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:51:33,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:33,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:33,890 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 16:51:33,891 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 16:51:34,000 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:51:34,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:34,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 16:51:34,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 51 proven. 27 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-07 16:51:34,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:34,397 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-07 16:51:34,397 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 22 treesize of output 14 [2024-11-07 16:51:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 51 proven. 27 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-07 16:51:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684109793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:34,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:34,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 34 [2024-11-07 16:51:34,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032263480] [2024-11-07 16:51:34,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:34,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-07 16:51:34,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-07 16:51:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1040, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 16:51:34,484 INFO L87 Difference]: Start difference. First operand 227 states and 259 transitions. Second operand has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:35,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:35,461 INFO L93 Difference]: Finished difference Result 390 states and 448 transitions. [2024-11-07 16:51:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-07 16:51:35,461 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-11-07 16:51:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:35,462 INFO L225 Difference]: With dead ends: 390 [2024-11-07 16:51:35,462 INFO L226 Difference]: Without dead ends: 372 [2024-11-07 16:51:35,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2024-11-07 16:51:35,462 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 250 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 4757 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:35,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 4757 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3063 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 16:51:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-07 16:51:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 191. [2024-11-07 16:51:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 188 states have (on average 1.1542553191489362) internal successors, (217), 190 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 217 transitions. [2024-11-07 16:51:35,465 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 217 transitions. Word has length 88 [2024-11-07 16:51:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:35,465 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 217 transitions. [2024-11-07 16:51:35,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 217 transitions. [2024-11-07 16:51:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-07 16:51:35,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:35,466 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:35,479 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 16:51:35,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:35,669 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:35,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash -733072209, now seen corresponding path program 2 times [2024-11-07 16:51:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:35,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822279746] [2024-11-07 16:51:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:35,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822279746] [2024-11-07 16:51:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822279746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835738934] [2024-11-07 16:51:35,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:51:35,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:35,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:35,852 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 16:51:35,853 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 16:51:35,949 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 16:51:35,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:35,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 16:51:35,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:35,960 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 16:51:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-07 16:51:36,089 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:51:36,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835738934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:51:36,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:51:36,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2024-11-07 16:51:36,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976563936] [2024-11-07 16:51:36,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:51:36,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:51:36,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:36,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:51:36,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:51:36,090 INFO L87 Difference]: Start difference. First operand 191 states and 217 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:36,115 INFO L93 Difference]: Finished difference Result 190 states and 216 transitions. [2024-11-07 16:51:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:51:36,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-07 16:51:36,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:36,116 INFO L225 Difference]: With dead ends: 190 [2024-11-07 16:51:36,116 INFO L226 Difference]: Without dead ends: 163 [2024-11-07 16:51:36,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:51:36,116 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:36,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 99 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:51:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-07 16:51:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 155. [2024-11-07 16:51:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 153 states have (on average 1.1111111111111112) internal successors, (170), 154 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2024-11-07 16:51:36,118 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 93 [2024-11-07 16:51:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:36,118 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2024-11-07 16:51:36,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2024-11-07 16:51:36,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-07 16:51:36,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:36,118 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:36,132 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 16:51:36,322 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,SelfDestructingSolverStorable37 [2024-11-07 16:51:36,323 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:36,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:36,323 INFO L85 PathProgramCache]: Analyzing trace with hash -585360551, now seen corresponding path program 3 times [2024-11-07 16:51:36,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:36,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990281711] [2024-11-07 16:51:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 15 proven. 120 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-07 16:51:36,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:36,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990281711] [2024-11-07 16:51:36,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990281711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:36,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981508697] [2024-11-07 16:51:36,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:51:36,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:36,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:36,586 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 16:51:36,587 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 16:51:36,682 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 16:51:36,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:36,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-07 16:51:36,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:36,686 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 16:51:36,689 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 16:51:36,792 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 16:51:36,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:51:36,807 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 16:51:36,812 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:51:36,812 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 16:51:36,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:51:36,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-07 16:51:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-07 16:51:37,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:37,253 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 18 [2024-11-07 16:51:37,256 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 24 treesize of output 15 [2024-11-07 16:51:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-07 16:51:37,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981508697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:37,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:37,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 26 [2024-11-07 16:51:37,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674348993] [2024-11-07 16:51:37,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:37,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 16:51:37,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 16:51:37,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:51:37,489 INFO L87 Difference]: Start difference. First operand 155 states and 170 transitions. Second operand has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:37,992 INFO L93 Difference]: Finished difference Result 174 states and 191 transitions. [2024-11-07 16:51:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 16:51:37,993 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-07 16:51:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:37,994 INFO L225 Difference]: With dead ends: 174 [2024-11-07 16:51:37,994 INFO L226 Difference]: Without dead ends: 174 [2024-11-07 16:51:37,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=1799, Unknown=0, NotChecked=0, Total=2256 [2024-11-07 16:51:37,994 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 392 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:37,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 519 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:51:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-07 16:51:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 165. [2024-11-07 16:51:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 163 states have (on average 1.1104294478527608) internal successors, (181), 164 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 181 transitions. [2024-11-07 16:51:37,996 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 181 transitions. Word has length 97 [2024-11-07 16:51:37,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:37,996 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 181 transitions. [2024-11-07 16:51:37,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 181 transitions. [2024-11-07 16:51:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-07 16:51:37,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:37,997 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:38,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-07 16:51:38,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-07 16:51:38,197 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:38,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash 797369199, now seen corresponding path program 3 times [2024-11-07 16:51:38,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:38,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096891559] [2024-11-07 16:51:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:38,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 9 proven. 144 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-07 16:51:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096891559] [2024-11-07 16:51:38,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096891559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991741723] [2024-11-07 16:51:38,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:51:38,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:38,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:38,575 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:51:38,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-07 16:51:38,677 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 16:51:38,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:38,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-07 16:51:38,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:38,681 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 16:51:38,685 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 16:51:38,810 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 16:51:38,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:51:38,834 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 16:51:38,839 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:51:38,839 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 16:51:38,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:51:38,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-07 16:51:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-07 16:51:39,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:39,309 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 18 [2024-11-07 16:51:39,312 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 24 treesize of output 15 [2024-11-07 16:51:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-07 16:51:39,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991741723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:39,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 27 [2024-11-07 16:51:39,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68679040] [2024-11-07 16:51:39,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:39,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 16:51:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 16:51:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:51:39,571 INFO L87 Difference]: Start difference. First operand 165 states and 181 transitions. Second operand has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:41,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:41,189 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-11-07 16:51:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-07 16:51:41,189 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-07 16:51:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:41,189 INFO L225 Difference]: With dead ends: 214 [2024-11-07 16:51:41,189 INFO L226 Difference]: Without dead ends: 105 [2024-11-07 16:51:41,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=691, Invalid=5789, Unknown=0, NotChecked=0, Total=6480 [2024-11-07 16:51:41,191 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 252 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:41,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 824 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:51:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-07 16:51:41,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-07 16:51:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2024-11-07 16:51:41,192 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 103 [2024-11-07 16:51:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:41,192 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2024-11-07 16:51:41,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2024-11-07 16:51:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-07 16:51:41,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:51:41,193 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:51:41,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-07 16:51:41,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-07 16:51:41,397 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-07 16:51:41,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:51:41,397 INFO L85 PathProgramCache]: Analyzing trace with hash -53143843, now seen corresponding path program 3 times [2024-11-07 16:51:41,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:51:41,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350111368] [2024-11-07 16:51:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:51:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:51:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:51:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 18 proven. 252 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-07 16:51:41,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:51:41,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350111368] [2024-11-07 16:51:41,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350111368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:51:41,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190482035] [2024-11-07 16:51:41,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:51:41,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:41,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:51:41,720 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:51:41,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-07 16:51:41,824 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 16:51:41,824 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:51:41,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-07 16:51:41,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:51:41,829 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 16:51:41,833 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 16:51:41,958 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 16:51:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:51:41,981 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 16:51:41,987 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:51:41,987 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 16:51:42,198 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2024-11-07 16:51:42,198 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 14 [2024-11-07 16:51:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 32 proven. 26 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-07 16:51:42,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:51:42,507 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 19 treesize of output 17 [2024-11-07 16:51:42,510 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 35 treesize of output 26 [2024-11-07 16:51:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-07 16:51:42,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190482035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:51:42,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:51:42,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 30 [2024-11-07 16:51:42,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383733590] [2024-11-07 16:51:42,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:51:42,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 16:51:42,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:51:42,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 16:51:42,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2024-11-07 16:51:42,723 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 30 states, 30 states have (on average 4.2) internal successors, (126), 30 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:51:43,799 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2024-11-07 16:51:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-07 16:51:43,800 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.2) internal successors, (126), 30 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-07 16:51:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:51:43,800 INFO L225 Difference]: With dead ends: 99 [2024-11-07 16:51:43,800 INFO L226 Difference]: Without dead ends: 0 [2024-11-07 16:51:43,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=515, Invalid=3907, Unknown=0, NotChecked=0, Total=4422 [2024-11-07 16:51:43,801 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 185 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:51:43,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 343 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:51:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-07 16:51:43,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-07 16:51:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-07 16:51:43,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2024-11-07 16:51:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:51:43,801 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-07 16:51:43,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.2) internal successors, (126), 30 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:51:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-07 16:51:43,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-07 16:51:43,803 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 24 remaining) [2024-11-07 16:51:43,804 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2024-11-07 16:51:43,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-07 16:51:44,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:51:44,011 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 3, 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] [2024-11-07 16:51:44,012 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 16:51:44,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:51:44 BoogieIcfgContainer [2024-11-07 16:51:44,014 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 16:51:44,014 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 16:51:44,014 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 16:51:44,014 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 16:51:44,015 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:51:11" (3/4) ... [2024-11-07 16:51:44,016 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-07 16:51:44,023 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-07 16:51:44,024 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-07 16:51:44,024 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-07 16:51:44,024 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-07 16:51:44,088 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-07 16:51:44,088 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-07 16:51:44,088 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 16:51:44,089 INFO L158 Benchmark]: Toolchain (without parser) took 32877.02ms. Allocated memory was 100.7MB in the beginning and 302.0MB in the end (delta: 201.3MB). Free memory was 76.1MB in the beginning and 248.1MB in the end (delta: -172.0MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2024-11-07 16:51:44,089 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:51:44,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.56ms. Allocated memory is still 100.7MB. Free memory was 75.8MB in the beginning and 63.8MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 16:51:44,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.33ms. Allocated memory is still 100.7MB. Free memory was 63.7MB in the beginning and 62.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-07 16:51:44,090 INFO L158 Benchmark]: Boogie Preprocessor took 24.55ms. Allocated memory is still 100.7MB. Free memory was 62.1MB in the beginning and 60.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:51:44,090 INFO L158 Benchmark]: RCFGBuilder took 366.51ms. Allocated memory is still 100.7MB. Free memory was 60.2MB in the beginning and 41.3MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 16:51:44,090 INFO L158 Benchmark]: TraceAbstraction took 32207.58ms. Allocated memory was 100.7MB in the beginning and 302.0MB in the end (delta: 201.3MB). Free memory was 40.6MB in the beginning and 251.5MB in the end (delta: -210.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:51:44,090 INFO L158 Benchmark]: Witness Printer took 74.21ms. Allocated memory is still 302.0MB. Free memory was 251.5MB in the beginning and 248.1MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:51:44,091 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.56ms. Allocated memory is still 100.7MB. Free memory was 75.8MB in the beginning and 63.8MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.33ms. Allocated memory is still 100.7MB. Free memory was 63.7MB in the beginning and 62.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.55ms. Allocated memory is still 100.7MB. Free memory was 62.1MB in the beginning and 60.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.51ms. Allocated memory is still 100.7MB. Free memory was 60.2MB in the beginning and 41.3MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 32207.58ms. Allocated memory was 100.7MB in the beginning and 302.0MB in the end (delta: 201.3MB). Free memory was 40.6MB in the beginning and 251.5MB in the end (delta: -210.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 74.21ms. Allocated memory is still 302.0MB. Free memory was 251.5MB in the beginning and 248.1MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 87]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 32.2s, OverallIterations: 41, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6274 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6274 mSDsluCounter, 29759 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26417 mSDsCounter, 178 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19616 IncrementalHoareTripleChecker+Invalid, 19794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 178 mSolverCounterUnsat, 3342 mSDtfsCounter, 19616 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3029 GetRequests, 2346 SyntacticMatches, 14 SemanticMatches, 669 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4204 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1191occurred in iteration=30, InterpolantAutomatonStates: 459, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 3325 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 3881 NumberOfCodeBlocks, 3545 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 4879 ConstructedInterpolants, 181 QuantifiedInterpolants, 40915 SizeOfPredicates, 92 NumberOfNonLiveVariables, 4656 ConjunctsInSsa, 402 ConjunctsInUnsatCore, 80 InterpolantComputations, 25 PerfectInterpolantSequences, 9416/11238 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-07 16:51:44,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE