./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/verifythis/prefixsum_iter.c --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/verifythis/prefixsum_iter.c', '-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', '4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d'] 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/verifythis/prefixsum_iter.c -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 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 16:22:57,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 16:22:58,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 16:22:58,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 16:22:58,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 16:22:58,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 16:22:58,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 16:22:58,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 16:22:58,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 16:22:58,091 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 16:22:58,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 16:22:58,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 16:22:58,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 16:22:58,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 16:22:58,093 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 16:22:58,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 16:22:58,093 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 16:22:58,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 16:22:58,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 16:22:58,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 16:22:58,094 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 16:22:58,094 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 16:22:58,094 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 16:22:58,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 16:22:58,094 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 16:22:58,094 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 16:22:58,095 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 16:22:58,095 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 16:22:58,095 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 16:22:58,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 16:22:58,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 16:22:58,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 16:22:58,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 16:22:58,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:22:58,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 16:22:58,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 16:22:58,096 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 16:22:58,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 16:22:58,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 16:22:58,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 16:22:58,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 16:22:58,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 16:22:58,097 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 -> 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d [2024-11-07 16:22:58,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 16:22:58,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 16:22:58,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 16:22:58,380 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 16:22:58,381 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 16:22:58,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/prefixsum_iter.c [2024-11-07 16:22:59,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 16:22:59,811 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 16:22:59,811 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/verifythis/prefixsum_iter.c [2024-11-07 16:22:59,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6156a7113/f889d6f0ba9d4e849a2d5ee67fcde4a0/FLAGb39f10288 [2024-11-07 16:23:00,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6156a7113/f889d6f0ba9d4e849a2d5ee67fcde4a0 [2024-11-07 16:23:00,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 16:23:00,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 16:23:00,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 16:23:00,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 16:23:00,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 16:23:00,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb53be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00, skipping insertion in model container [2024-11-07 16:23:00,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,219 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 16:23:00,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:23:00,371 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 16:23:00,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:23:00,403 INFO L204 MainTranslator]: Completed translation [2024-11-07 16:23:00,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00 WrapperNode [2024-11-07 16:23:00,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 16:23:00,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 16:23:00,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 16:23:00,405 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 16:23:00,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,447 INFO L138 Inliner]: procedures = 22, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2024-11-07 16:23:00,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 16:23:00,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 16:23:00,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 16:23:00,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 16:23:00,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,492 INFO L175 MemorySlicer]: Split 16 memory accesses to 2 slices as follows [2, 14]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-07 16:23:00,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,505 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 16:23:00,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 16:23:00,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 16:23:00,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 16:23:00,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (1/1) ... [2024-11-07 16:23:00,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:23:00,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:00,566 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 16:23:00,571 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 16:23:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 16:23:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-07 16:23:00,594 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-07 16:23:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 16:23:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 16:23:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 16:23:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 16:23:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 16:23:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 16:23:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 16:23:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 16:23:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 16:23:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-07 16:23:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-07 16:23:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 16:23:00,694 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 16:23:00,695 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 16:23:01,022 INFO L? ?]: Removed 113 outVars from TransFormulas that were not future-live. [2024-11-07 16:23:01,022 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 16:23:01,033 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 16:23:01,033 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-07 16:23:01,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:23:01 BoogieIcfgContainer [2024-11-07 16:23:01,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 16:23:01,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 16:23:01,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 16:23:01,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 16:23:01,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:23:00" (1/3) ... [2024-11-07 16:23:01,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9b1e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:23:01, skipping insertion in model container [2024-11-07 16:23:01,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:23:00" (2/3) ... [2024-11-07 16:23:01,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9b1e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:23:01, skipping insertion in model container [2024-11-07 16:23:01,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:23:01" (3/3) ... [2024-11-07 16:23:01,051 INFO L112 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2024-11-07 16:23:01,063 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 16:23:01,064 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-11-07 16:23:01,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 16:23:01,113 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;@5bc8c9ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 16:23:01,113 INFO L334 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-11-07 16:23:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 63 states have (on average 1.7936507936507937) internal successors, (113), 97 states have internal predecessors, (113), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:01,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-07 16:23:01,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:01,125 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:01,125 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:01,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:01,130 INFO L85 PathProgramCache]: Analyzing trace with hash 637515611, now seen corresponding path program 1 times [2024-11-07 16:23:01,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:01,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215242193] [2024-11-07 16:23:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:01,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215242193] [2024-11-07 16:23:01,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215242193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:01,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:01,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:23:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557077414] [2024-11-07 16:23:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:01,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:23:01,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:01,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:23:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:23:01,342 INFO L87 Difference]: Start difference. First operand has 104 states, 63 states have (on average 1.7936507936507937) internal successors, (113), 97 states have internal predecessors, (113), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:23:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:01,413 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2024-11-07 16:23:01,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:23:01,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-07 16:23:01,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:01,420 INFO L225 Difference]: With dead ends: 103 [2024-11-07 16:23:01,421 INFO L226 Difference]: Without dead ends: 101 [2024-11-07 16:23:01,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 16:23:01,426 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:01,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 195 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-07 16:23:01,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-07 16:23:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 61 states have (on average 1.6557377049180328) internal successors, (101), 94 states have internal predecessors, (101), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2024-11-07 16:23:01,466 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 29 [2024-11-07 16:23:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:01,467 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2024-11-07 16:23:01,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:23:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2024-11-07 16:23:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-07 16:23:01,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:01,468 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:01,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 16:23:01,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:01,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:01,471 INFO L85 PathProgramCache]: Analyzing trace with hash -243004133, now seen corresponding path program 1 times [2024-11-07 16:23:01,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:01,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617957497] [2024-11-07 16:23:01,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:01,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:01,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617957497] [2024-11-07 16:23:01,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617957497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:01,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:01,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:23:01,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488175829] [2024-11-07 16:23:01,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:01,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:23:01,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:23:01,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:01,814 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:01,973 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2024-11-07 16:23:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:23:01,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2024-11-07 16:23:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:01,976 INFO L225 Difference]: With dead ends: 99 [2024-11-07 16:23:01,976 INFO L226 Difference]: Without dead ends: 99 [2024-11-07 16:23:01,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:01,977 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 76 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:01,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 204 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:01,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-07 16:23:01,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-07 16:23:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 61 states have (on average 1.6229508196721312) internal successors, (99), 92 states have internal predecessors, (99), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2024-11-07 16:23:01,989 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 29 [2024-11-07 16:23:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:01,990 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2024-11-07 16:23:01,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2024-11-07 16:23:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-07 16:23:01,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:01,991 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:01,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 16:23:01,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:01,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:01,993 INFO L85 PathProgramCache]: Analyzing trace with hash -243004132, now seen corresponding path program 1 times [2024-11-07 16:23:01,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:01,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286595423] [2024-11-07 16:23:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:01,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:02,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:02,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:02,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:02,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:02,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:02,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286595423] [2024-11-07 16:23:02,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286595423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:02,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:02,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-07 16:23:02,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843495700] [2024-11-07 16:23:02,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:02,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 16:23:02,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:02,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 16:23:02,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:23:02,719 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:03,227 INFO L93 Difference]: Finished difference Result 164 states and 183 transitions. [2024-11-07 16:23:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:23:03,227 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2024-11-07 16:23:03,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:03,228 INFO L225 Difference]: With dead ends: 164 [2024-11-07 16:23:03,228 INFO L226 Difference]: Without dead ends: 164 [2024-11-07 16:23:03,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:23:03,230 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 250 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:03,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 508 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:23:03,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-07 16:23:03,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 110. [2024-11-07 16:23:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 69 states have (on average 1.5797101449275361) internal successors, (109), 100 states have internal predecessors, (109), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-07 16:23:03,238 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 29 [2024-11-07 16:23:03,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:03,238 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-07 16:23:03,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-07 16:23:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-07 16:23:03,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:03,242 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:03,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 16:23:03,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:03,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:03,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1056806476, now seen corresponding path program 1 times [2024-11-07 16:23:03,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:03,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372632680] [2024-11-07 16:23:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:03,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:03,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:03,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372632680] [2024-11-07 16:23:03,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372632680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:03,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:03,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:23:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83847667] [2024-11-07 16:23:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:03,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:23:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:23:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:03,311 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:23:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:03,414 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2024-11-07 16:23:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:23:03,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-11-07 16:23:03,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:03,415 INFO L225 Difference]: With dead ends: 109 [2024-11-07 16:23:03,416 INFO L226 Difference]: Without dead ends: 109 [2024-11-07 16:23:03,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:03,416 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 75 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:03,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 217 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-07 16:23:03,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-07 16:23:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 69 states have (on average 1.565217391304348) internal successors, (108), 99 states have internal predecessors, (108), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2024-11-07 16:23:03,427 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 30 [2024-11-07 16:23:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:03,428 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2024-11-07 16:23:03,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:23:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2024-11-07 16:23:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-07 16:23:03,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:03,429 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:03,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 16:23:03,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:03,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1056806477, now seen corresponding path program 1 times [2024-11-07 16:23:03,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:03,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604963153] [2024-11-07 16:23:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:03,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:03,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604963153] [2024-11-07 16:23:03,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604963153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:03,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:03,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:23:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248093044] [2024-11-07 16:23:03,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:03,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:23:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:23:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:23:03,760 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:03,983 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2024-11-07 16:23:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:23:03,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2024-11-07 16:23:03,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:03,985 INFO L225 Difference]: With dead ends: 113 [2024-11-07 16:23:03,985 INFO L226 Difference]: Without dead ends: 113 [2024-11-07 16:23:03,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:23:03,986 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 9 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:03,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 385 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:23:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-07 16:23:03,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2024-11-07 16:23:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.5694444444444444) internal successors, (113), 102 states have internal predecessors, (113), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2024-11-07 16:23:03,995 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 30 [2024-11-07 16:23:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:03,995 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2024-11-07 16:23:03,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2024-11-07 16:23:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-07 16:23:03,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:03,996 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:03,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 16:23:03,996 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:03,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1924338057, now seen corresponding path program 1 times [2024-11-07 16:23:03,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:03,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967945881] [2024-11-07 16:23:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:03,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:04,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:04,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:04,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:04,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:04,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:04,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967945881] [2024-11-07 16:23:04,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967945881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:04,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700749842] [2024-11-07 16:23:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:04,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:04,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:04,408 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 16:23:04,410 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 16:23:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:04,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-07 16:23:04,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:04,646 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 10 treesize of output 9 [2024-11-07 16:23:04,653 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 16:23:04,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:23:04,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-07 16:23:04,901 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:23:04,902 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 16:23:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:23:05,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:05,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700749842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:05,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:23:05,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 20 [2024-11-07 16:23:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880147855] [2024-11-07 16:23:05,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:05,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 16:23:05,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 16:23:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2024-11-07 16:23:05,419 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:06,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:06,555 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions. [2024-11-07 16:23:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 16:23:06,556 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 30 [2024-11-07 16:23:06,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:06,557 INFO L225 Difference]: With dead ends: 164 [2024-11-07 16:23:06,557 INFO L226 Difference]: Without dead ends: 164 [2024-11-07 16:23:06,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 16:23:06,559 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 237 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:06,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 773 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 16:23:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-07 16:23:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 111. [2024-11-07 16:23:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 71 states have (on average 1.5492957746478873) internal successors, (110), 101 states have internal predecessors, (110), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2024-11-07 16:23:06,566 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 30 [2024-11-07 16:23:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:06,567 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2024-11-07 16:23:06,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2024-11-07 16:23:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-07 16:23:06,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:06,568 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:06,586 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 16:23:06,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:06,769 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:06,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:06,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1977238640, now seen corresponding path program 1 times [2024-11-07 16:23:06,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:06,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974107716] [2024-11-07 16:23:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:06,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:06,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:06,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:06,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:06,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:06,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:06,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974107716] [2024-11-07 16:23:06,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974107716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:06,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:06,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:23:06,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755652446] [2024-11-07 16:23:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:06,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:23:06,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:06,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:23:06,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:23:06,923 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:07,037 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2024-11-07 16:23:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:23:07,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2024-11-07 16:23:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:07,038 INFO L225 Difference]: With dead ends: 143 [2024-11-07 16:23:07,038 INFO L226 Difference]: Without dead ends: 143 [2024-11-07 16:23:07,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:23:07,039 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 38 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:07,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 497 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:07,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-07 16:23:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 113. [2024-11-07 16:23:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 103 states have internal predecessors, (112), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2024-11-07 16:23:07,050 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 32 [2024-11-07 16:23:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:07,050 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2024-11-07 16:23:07,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2024-11-07 16:23:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:23:07,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:07,051 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:07,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 16:23:07,051 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:07,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:07,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1211457505, now seen corresponding path program 1 times [2024-11-07 16:23:07,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:07,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510894765] [2024-11-07 16:23:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:07,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:07,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:07,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:07,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:07,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 16:23:07,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:07,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510894765] [2024-11-07 16:23:07,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510894765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:07,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762855135] [2024-11-07 16:23:07,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:07,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:07,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:07,285 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 16:23:07,287 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 16:23:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:07,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 16:23:07,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:07,412 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 16:23:07,421 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 10 treesize of output 9 [2024-11-07 16:23:07,577 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 16:23:07,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-07 16:23:07,591 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 16:23:07,591 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 16:23:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 16:23:07,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:08,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762855135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:08,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:23:08,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-11-07 16:23:08,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016751815] [2024-11-07 16:23:08,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:08,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 16:23:08,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 16:23:08,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:23:08,315 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 7 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:09,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:09,575 INFO L93 Difference]: Finished difference Result 161 states and 178 transitions. [2024-11-07 16:23:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 16:23:09,576 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 7 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) Word has length 33 [2024-11-07 16:23:09,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:09,577 INFO L225 Difference]: With dead ends: 161 [2024-11-07 16:23:09,577 INFO L226 Difference]: Without dead ends: 161 [2024-11-07 16:23:09,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=363, Invalid=1707, Unknown=0, NotChecked=0, Total=2070 [2024-11-07 16:23:09,578 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 595 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:09,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 609 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-07 16:23:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-07 16:23:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 116. [2024-11-07 16:23:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 106 states have internal predecessors, (115), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2024-11-07 16:23:09,590 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 33 [2024-11-07 16:23:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:09,590 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2024-11-07 16:23:09,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 7 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:09,590 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2024-11-07 16:23:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:23:09,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:09,591 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:09,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 16:23:09,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:09,791 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:09,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:09,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1164816040, now seen corresponding path program 1 times [2024-11-07 16:23:09,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:09,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312209319] [2024-11-07 16:23:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:09,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:09,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:09,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:09,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:09,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:09,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:09,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312209319] [2024-11-07 16:23:09,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312209319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:09,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:09,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:23:09,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134480700] [2024-11-07 16:23:09,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:09,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:23:09,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:23:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:23:09,908 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:10,027 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2024-11-07 16:23:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 16:23:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-07 16:23:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:10,028 INFO L225 Difference]: With dead ends: 110 [2024-11-07 16:23:10,028 INFO L226 Difference]: Without dead ends: 110 [2024-11-07 16:23:10,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:23:10,029 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 82 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:10,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 228 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-07 16:23:10,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-07 16:23:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 100 states have internal predecessors, (109), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-07 16:23:10,038 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 33 [2024-11-07 16:23:10,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:10,039 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-07 16:23:10,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:10,039 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-07 16:23:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-07 16:23:10,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:10,043 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:10,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 16:23:10,043 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:10,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1164816041, now seen corresponding path program 1 times [2024-11-07 16:23:10,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:10,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585833545] [2024-11-07 16:23:10,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 16:23:10,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:10,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585833545] [2024-11-07 16:23:10,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585833545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:10,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:10,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-07 16:23:10,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249382437] [2024-11-07 16:23:10,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:10,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 16:23:10,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:10,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 16:23:10,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:23:10,230 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:10,414 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2024-11-07 16:23:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:23:10,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-07 16:23:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:10,416 INFO L225 Difference]: With dead ends: 146 [2024-11-07 16:23:10,416 INFO L226 Difference]: Without dead ends: 146 [2024-11-07 16:23:10,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-07 16:23:10,417 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 203 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:10,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 597 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:10,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-07 16:23:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 108. [2024-11-07 16:23:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 98 states have internal predecessors, (106), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:10,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2024-11-07 16:23:10,421 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 33 [2024-11-07 16:23:10,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:10,421 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2024-11-07 16:23:10,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:10,422 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2024-11-07 16:23:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-07 16:23:10,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:10,424 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:10,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 16:23:10,424 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:10,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:10,425 INFO L85 PathProgramCache]: Analyzing trace with hash 805983195, now seen corresponding path program 1 times [2024-11-07 16:23:10,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:10,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002013359] [2024-11-07 16:23:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:10,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002013359] [2024-11-07 16:23:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002013359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436673836] [2024-11-07 16:23:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:10,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:10,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:10,727 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 16:23:10,728 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 16:23:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:10,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 16:23:10,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:10,808 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 10 treesize of output 9 [2024-11-07 16:23:10,926 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-07 16:23:10,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-11-07 16:23:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:11,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436673836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:11,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:23:11,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2024-11-07 16:23:11,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233856508] [2024-11-07 16:23:11,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:11,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 16:23:11,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 16:23:11,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-07 16:23:11,568 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:23:11,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:11,965 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2024-11-07 16:23:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:23:11,965 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 35 [2024-11-07 16:23:11,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:11,966 INFO L225 Difference]: With dead ends: 108 [2024-11-07 16:23:11,966 INFO L226 Difference]: Without dead ends: 108 [2024-11-07 16:23:11,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:23:11,967 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 94 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:11,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 428 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:23:11,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-07 16:23:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2024-11-07 16:23:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 95 states have internal predecessors, (103), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2024-11-07 16:23:11,971 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 35 [2024-11-07 16:23:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:11,972 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2024-11-07 16:23:11,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:23:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2024-11-07 16:23:11,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-07 16:23:11,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:11,972 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:11,988 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 16:23:12,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:12,173 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:12,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:12,173 INFO L85 PathProgramCache]: Analyzing trace with hash -81182837, now seen corresponding path program 1 times [2024-11-07 16:23:12,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:12,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272572128] [2024-11-07 16:23:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:12,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:12,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:12,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272572128] [2024-11-07 16:23:12,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272572128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:12,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:12,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:23:12,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204248587] [2024-11-07 16:23:12,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:12,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:23:12,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:12,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:23:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:12,226 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:12,305 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2024-11-07 16:23:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:23:12,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2024-11-07 16:23:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:12,306 INFO L225 Difference]: With dead ends: 103 [2024-11-07 16:23:12,307 INFO L226 Difference]: Without dead ends: 103 [2024-11-07 16:23:12,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:23:12,308 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 71 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:12,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 200 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:12,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-07 16:23:12,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2024-11-07 16:23:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 73 states have (on average 1.36986301369863) internal successors, (100), 92 states have internal predecessors, (100), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2024-11-07 16:23:12,311 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 36 [2024-11-07 16:23:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:12,311 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2024-11-07 16:23:12,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2024-11-07 16:23:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-07 16:23:12,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:12,312 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:12,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 16:23:12,312 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:12,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash -81182836, now seen corresponding path program 1 times [2024-11-07 16:23:12,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:12,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895784305] [2024-11-07 16:23:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:12,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895784305] [2024-11-07 16:23:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895784305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181203994] [2024-11-07 16:23:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:12,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:12,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:12,396 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 16:23:12,398 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 16:23:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:12,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 16:23:12,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:12,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:12,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181203994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:12,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:12,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2024-11-07 16:23:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337657504] [2024-11-07 16:23:12,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:12,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:23:12,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:23:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:23:12,572 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:12,654 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2024-11-07 16:23:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:23:12,654 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2024-11-07 16:23:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:12,656 INFO L225 Difference]: With dead ends: 134 [2024-11-07 16:23:12,656 INFO L226 Difference]: Without dead ends: 134 [2024-11-07 16:23:12,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:23:12,657 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 32 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:12,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 454 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-07 16:23:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 108. [2024-11-07 16:23:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 79 states have (on average 1.3544303797468353) internal successors, (107), 98 states have internal predecessors, (107), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2024-11-07 16:23:12,662 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 36 [2024-11-07 16:23:12,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:12,662 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2024-11-07 16:23:12,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:12,662 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2024-11-07 16:23:12,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-07 16:23:12,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:12,663 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:12,680 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 16:23:12,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-07 16:23:12,868 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:12,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:12,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1778259694, now seen corresponding path program 1 times [2024-11-07 16:23:12,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:12,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290971130] [2024-11-07 16:23:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:12,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:13,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:13,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:13,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:13,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:13,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290971130] [2024-11-07 16:23:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290971130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965559709] [2024-11-07 16:23:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:13,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:13,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:13,087 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 16:23:13,088 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 16:23:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:13,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-07 16:23:13,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:13,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:13,465 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 28 treesize of output 24 [2024-11-07 16:23:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965559709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:13,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:13,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2024-11-07 16:23:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013537791] [2024-11-07 16:23:13,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:13,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 16:23:13,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 16:23:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-11-07 16:23:13,537 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 26 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:23:13,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:13,852 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2024-11-07 16:23:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 16:23:13,853 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2024-11-07 16:23:13,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:13,853 INFO L225 Difference]: With dead ends: 106 [2024-11-07 16:23:13,853 INFO L226 Difference]: Without dead ends: 106 [2024-11-07 16:23:13,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2024-11-07 16:23:13,854 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 229 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:13,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 562 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:23:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-07 16:23:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-07 16:23:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 96 states have internal predecessors, (105), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2024-11-07 16:23:13,857 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 37 [2024-11-07 16:23:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:13,857 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2024-11-07 16:23:13,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:23:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2024-11-07 16:23:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 16:23:13,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:13,858 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:13,874 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 16:23:14,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-07 16:23:14,063 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:14,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2116695831, now seen corresponding path program 1 times [2024-11-07 16:23:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:14,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601826071] [2024-11-07 16:23:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:14,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:14,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601826071] [2024-11-07 16:23:14,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601826071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:14,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865473183] [2024-11-07 16:23:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:14,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:14,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:14,163 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 16:23:14,164 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 16:23:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 16:23:14,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:14,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:14,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865473183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:14,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:14,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 10 [2024-11-07 16:23:14,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985697847] [2024-11-07 16:23:14,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:14,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 16:23:14,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 16:23:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-07 16:23:14,344 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:14,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:14,437 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2024-11-07 16:23:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:23:14,437 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-11-07 16:23:14,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:14,438 INFO L225 Difference]: With dead ends: 118 [2024-11-07 16:23:14,438 INFO L226 Difference]: Without dead ends: 118 [2024-11-07 16:23:14,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-07 16:23:14,438 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 18 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:14,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 652 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-07 16:23:14,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2024-11-07 16:23:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 87 states have (on average 1.3103448275862069) internal successors, (114), 104 states have internal predecessors, (114), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2024-11-07 16:23:14,447 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 41 [2024-11-07 16:23:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:14,447 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2024-11-07 16:23:14,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:14,447 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2024-11-07 16:23:14,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-07 16:23:14,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:14,448 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:14,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 16:23:14,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 16:23:14,649 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:14,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:14,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1151933082, now seen corresponding path program 1 times [2024-11-07 16:23:14,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:14,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095348928] [2024-11-07 16:23:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:14,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:14,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:14,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095348928] [2024-11-07 16:23:14,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095348928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:14,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303903035] [2024-11-07 16:23:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:14,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:14,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:14,844 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 16:23:14,846 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 16:23:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:14,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 16:23:14,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:15,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:15,123 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 22 treesize of output 18 [2024-11-07 16:23:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:15,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303903035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:15,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:15,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-11-07 16:23:15,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420955553] [2024-11-07 16:23:15,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:15,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-07 16:23:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:15,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-07 16:23:15,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:23:15,201 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:23:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:15,695 INFO L93 Difference]: Finished difference Result 157 states and 186 transitions. [2024-11-07 16:23:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 16:23:15,695 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 41 [2024-11-07 16:23:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:15,697 INFO L225 Difference]: With dead ends: 157 [2024-11-07 16:23:15,697 INFO L226 Difference]: Without dead ends: 157 [2024-11-07 16:23:15,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2024-11-07 16:23:15,697 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 226 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:15,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 741 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:23:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-07 16:23:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 127. [2024-11-07 16:23:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 100 states have (on average 1.35) internal successors, (135), 117 states have internal predecessors, (135), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2024-11-07 16:23:15,702 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 41 [2024-11-07 16:23:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:15,702 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2024-11-07 16:23:15,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:23:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2024-11-07 16:23:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 16:23:15,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:15,706 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:15,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-07 16:23:15,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:15,907 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:15,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1193029814, now seen corresponding path program 1 times [2024-11-07 16:23:15,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:15,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407850180] [2024-11-07 16:23:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:15,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:16,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:16,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:16,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:16,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:16,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:16,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407850180] [2024-11-07 16:23:16,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407850180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:16,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773734036] [2024-11-07 16:23:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:16,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:16,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:16,134 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 16:23:16,138 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 16:23:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:16,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 16:23:16,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:16,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:16,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:23:16,417 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 21 treesize of output 25 [2024-11-07 16:23:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:16,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773734036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:16,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:16,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 20 [2024-11-07 16:23:16,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809910693] [2024-11-07 16:23:16,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:16,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 16:23:16,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:16,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 16:23:16,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-07 16:23:16,519 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand has 21 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:23:16,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:16,792 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2024-11-07 16:23:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 16:23:16,792 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 42 [2024-11-07 16:23:16,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:16,793 INFO L225 Difference]: With dead ends: 138 [2024-11-07 16:23:16,793 INFO L226 Difference]: Without dead ends: 138 [2024-11-07 16:23:16,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:23:16,794 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 189 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:16,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 438 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:23:16,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-07 16:23:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2024-11-07 16:23:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 102 states have (on average 1.3627450980392157) internal successors, (139), 119 states have internal predecessors, (139), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2024-11-07 16:23:16,799 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 42 [2024-11-07 16:23:16,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:16,799 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2024-11-07 16:23:16,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-07 16:23:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2024-11-07 16:23:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 16:23:16,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:16,800 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:16,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 16:23:17,007 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,SelfDestructingSolverStorable16 [2024-11-07 16:23:17,008 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:17,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1193029813, now seen corresponding path program 1 times [2024-11-07 16:23:17,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:17,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77106973] [2024-11-07 16:23:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:17,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:17,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77106973] [2024-11-07 16:23:17,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77106973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:17,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:17,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:23:17,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894696017] [2024-11-07 16:23:17,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:17,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:23:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:23:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:17,083 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:17,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:17,157 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2024-11-07 16:23:17,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:23:17,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-07 16:23:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:17,159 INFO L225 Difference]: With dead ends: 128 [2024-11-07 16:23:17,159 INFO L226 Difference]: Without dead ends: 128 [2024-11-07 16:23:17,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:23:17,160 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 64 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:17,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 197 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-07 16:23:17,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-07 16:23:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 102 states have (on average 1.3431372549019607) internal successors, (137), 118 states have internal predecessors, (137), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2024-11-07 16:23:17,164 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 42 [2024-11-07 16:23:17,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:17,165 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2024-11-07 16:23:17,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2024-11-07 16:23:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 16:23:17,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:17,166 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:17,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 16:23:17,166 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:17,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1350187180, now seen corresponding path program 1 times [2024-11-07 16:23:17,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:17,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952525919] [2024-11-07 16:23:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:17,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:17,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:17,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952525919] [2024-11-07 16:23:17,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952525919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:17,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186121932] [2024-11-07 16:23:17,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:17,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:17,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:17,355 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 16:23:17,356 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 16:23:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:17,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-07 16:23:17,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:17,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:17,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-07 16:23:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:17,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186121932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:17,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:17,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2024-11-07 16:23:17,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990308719] [2024-11-07 16:23:17,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:17,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 16:23:17,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:17,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 16:23:17,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:23:17,819 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 27 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 26 states have internal predecessors, (64), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:18,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:18,345 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2024-11-07 16:23:18,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 16:23:18,345 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 26 states have internal predecessors, (64), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 42 [2024-11-07 16:23:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:18,346 INFO L225 Difference]: With dead ends: 150 [2024-11-07 16:23:18,346 INFO L226 Difference]: Without dead ends: 150 [2024-11-07 16:23:18,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2024-11-07 16:23:18,347 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 294 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:18,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 864 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:23:18,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-07 16:23:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 128. [2024-11-07 16:23:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 118 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2024-11-07 16:23:18,352 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 42 [2024-11-07 16:23:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:18,352 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2024-11-07 16:23:18,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 26 states have internal predecessors, (64), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2024-11-07 16:23:18,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 16:23:18,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:18,355 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:18,367 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 16:23:18,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:18,555 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:18,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash -254649841, now seen corresponding path program 1 times [2024-11-07 16:23:18,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:18,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186738464] [2024-11-07 16:23:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:18,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:18,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:18,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:18,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:18,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:18,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:18,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186738464] [2024-11-07 16:23:18,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186738464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:18,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349326004] [2024-11-07 16:23:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:18,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:18,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:18,679 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 16:23:18,681 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 16:23:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:18,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 16:23:18,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:18,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:18,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349326004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:18,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:18,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2024-11-07 16:23:18,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792121007] [2024-11-07 16:23:18,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:18,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 16:23:18,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:18,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 16:23:18,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:23:18,886 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:18,986 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2024-11-07 16:23:18,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:23:18,986 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2024-11-07 16:23:18,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:18,987 INFO L225 Difference]: With dead ends: 137 [2024-11-07 16:23:18,987 INFO L226 Difference]: Without dead ends: 137 [2024-11-07 16:23:18,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-07 16:23:18,988 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 64 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:18,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 409 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-07 16:23:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 128. [2024-11-07 16:23:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 118 states have internal predecessors, (135), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2024-11-07 16:23:18,996 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 44 [2024-11-07 16:23:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:18,996 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2024-11-07 16:23:18,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:18,996 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2024-11-07 16:23:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-07 16:23:18,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:18,999 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:19,015 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 16:23:19,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:19,199 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:19,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:19,200 INFO L85 PathProgramCache]: Analyzing trace with hash 696898974, now seen corresponding path program 1 times [2024-11-07 16:23:19,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:19,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833850188] [2024-11-07 16:23:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:19,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:19,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:19,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:19,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:19,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833850188] [2024-11-07 16:23:19,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833850188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799168237] [2024-11-07 16:23:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:19,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:19,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:19,507 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 16:23:19,509 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 16:23:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:19,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-07 16:23:19,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:19,702 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 16:23:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:19,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:19,791 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 37 treesize of output 33 [2024-11-07 16:23:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:19,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799168237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:19,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:19,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 26 [2024-11-07 16:23:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9256122] [2024-11-07 16:23:19,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:19,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 16:23:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 16:23:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-07 16:23:19,862 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:23:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:20,194 INFO L93 Difference]: Finished difference Result 155 states and 178 transitions. [2024-11-07 16:23:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 16:23:20,194 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2024-11-07 16:23:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:20,195 INFO L225 Difference]: With dead ends: 155 [2024-11-07 16:23:20,195 INFO L226 Difference]: Without dead ends: 155 [2024-11-07 16:23:20,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2024-11-07 16:23:20,196 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 119 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:20,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1211 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:23:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-07 16:23:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 133. [2024-11-07 16:23:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 123 states have internal predecessors, (140), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2024-11-07 16:23:20,199 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 45 [2024-11-07 16:23:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:20,199 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2024-11-07 16:23:20,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:23:20,200 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2024-11-07 16:23:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-07 16:23:20,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:20,200 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:20,216 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 16:23:20,400 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,SelfDestructingSolverStorable20 [2024-11-07 16:23:20,401 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:20,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash 129037855, now seen corresponding path program 1 times [2024-11-07 16:23:20,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:20,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042946877] [2024-11-07 16:23:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:20,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:20,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042946877] [2024-11-07 16:23:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042946877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:20,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:20,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:23:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860148680] [2024-11-07 16:23:20,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:20,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:23:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:20,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:23:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:20,458 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:20,526 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2024-11-07 16:23:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:23:20,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2024-11-07 16:23:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:20,527 INFO L225 Difference]: With dead ends: 132 [2024-11-07 16:23:20,527 INFO L226 Difference]: Without dead ends: 132 [2024-11-07 16:23:20,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:23:20,529 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 59 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:20,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 204 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-07 16:23:20,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-07 16:23:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 108 states have (on average 1.287037037037037) internal successors, (139), 122 states have internal predecessors, (139), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2024-11-07 16:23:20,533 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 46 [2024-11-07 16:23:20,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:20,533 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2024-11-07 16:23:20,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2024-11-07 16:23:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-07 16:23:20,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:20,534 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:20,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 16:23:20,534 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:20,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 129037856, now seen corresponding path program 1 times [2024-11-07 16:23:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036368613] [2024-11-07 16:23:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:20,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:20,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036368613] [2024-11-07 16:23:20,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036368613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222793567] [2024-11-07 16:23:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:20,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:20,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:20,685 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 16:23:20,686 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 16:23:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:20,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 16:23:20,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:20,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:20,957 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 22 treesize of output 18 [2024-11-07 16:23:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:20,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222793567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:20,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:20,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-07 16:23:20,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106816793] [2024-11-07 16:23:20,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:20,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 16:23:20,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 16:23:20,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:23:20,986 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 16:23:21,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:21,156 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2024-11-07 16:23:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:23:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2024-11-07 16:23:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:21,157 INFO L225 Difference]: With dead ends: 139 [2024-11-07 16:23:21,157 INFO L226 Difference]: Without dead ends: 139 [2024-11-07 16:23:21,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-07 16:23:21,157 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 71 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:21,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 375 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-07 16:23:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-11-07 16:23:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 125 states have internal predecessors, (143), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2024-11-07 16:23:21,160 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 46 [2024-11-07 16:23:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:21,161 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2024-11-07 16:23:21,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 16:23:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2024-11-07 16:23:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-07 16:23:21,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:21,161 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:21,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-07 16:23:21,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:21,362 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:21,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash 423564489, now seen corresponding path program 1 times [2024-11-07 16:23:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:21,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383403202] [2024-11-07 16:23:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:21,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:21,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:21,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:21,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:21,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:21,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:21,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383403202] [2024-11-07 16:23:21,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383403202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:21,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455454271] [2024-11-07 16:23:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:21,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:21,484 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 16:23:21,485 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 16:23:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:21,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 16:23:21,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:21,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:21,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455454271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:21,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:21,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 11 [2024-11-07 16:23:21,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644997671] [2024-11-07 16:23:21,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:21,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 16:23:21,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:21,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 16:23:21,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-07 16:23:21,682 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:21,829 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2024-11-07 16:23:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:23:21,829 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2024-11-07 16:23:21,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:21,830 INFO L225 Difference]: With dead ends: 137 [2024-11-07 16:23:21,830 INFO L226 Difference]: Without dead ends: 137 [2024-11-07 16:23:21,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-07 16:23:21,830 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 82 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:21,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 479 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-07 16:23:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2024-11-07 16:23:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 125 states have internal predecessors, (142), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 156 transitions. [2024-11-07 16:23:21,834 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 156 transitions. Word has length 46 [2024-11-07 16:23:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:21,835 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 156 transitions. [2024-11-07 16:23:21,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:21,835 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 156 transitions. [2024-11-07 16:23:21,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-07 16:23:21,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:21,835 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:21,852 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 16:23:22,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:22,039 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:22,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:22,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1327398805, now seen corresponding path program 1 times [2024-11-07 16:23:22,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:22,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676388461] [2024-11-07 16:23:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:22,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:22,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676388461] [2024-11-07 16:23:22,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676388461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:22,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301627569] [2024-11-07 16:23:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:22,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:22,129 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 16:23:22,131 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 16:23:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 16:23:22,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:22,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:22,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301627569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:22,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:22,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-07 16:23:22,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108025344] [2024-11-07 16:23:22,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:22,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 16:23:22,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 16:23:22,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-07 16:23:22,356 INFO L87 Difference]: Start difference. First operand 135 states and 156 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:22,617 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2024-11-07 16:23:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 16:23:22,617 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2024-11-07 16:23:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:22,618 INFO L225 Difference]: With dead ends: 140 [2024-11-07 16:23:22,618 INFO L226 Difference]: Without dead ends: 140 [2024-11-07 16:23:22,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-11-07 16:23:22,619 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 115 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:22,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 797 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:23:22,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-07 16:23:22,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2024-11-07 16:23:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.247787610619469) internal successors, (141), 126 states have internal predecessors, (141), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 155 transitions. [2024-11-07 16:23:22,622 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 155 transitions. Word has length 46 [2024-11-07 16:23:22,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:22,623 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 155 transitions. [2024-11-07 16:23:22,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 14 states have internal predecessors, (55), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:22,623 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 155 transitions. [2024-11-07 16:23:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-07 16:23:22,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:22,624 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:22,639 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 16:23:22,827 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,SelfDestructingSolverStorable24 [2024-11-07 16:23:22,828 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:22,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:22,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1575336112, now seen corresponding path program 1 times [2024-11-07 16:23:22,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:22,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115196723] [2024-11-07 16:23:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:22,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:22,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:22,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115196723] [2024-11-07 16:23:22,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115196723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:22,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266173518] [2024-11-07 16:23:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:22,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:22,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:22,977 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 16:23:22,979 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 16:23:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:23,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 16:23:23,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:23,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266173518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:23,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:23,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2024-11-07 16:23:23,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236521367] [2024-11-07 16:23:23,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:23,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 16:23:23,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:23,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 16:23:23,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:23:23,258 INFO L87 Difference]: Start difference. First operand 136 states and 155 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 17 states have internal predecessors, (57), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:23,476 INFO L93 Difference]: Finished difference Result 189 states and 213 transitions. [2024-11-07 16:23:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:23:23,477 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 17 states have internal predecessors, (57), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2024-11-07 16:23:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:23,478 INFO L225 Difference]: With dead ends: 189 [2024-11-07 16:23:23,478 INFO L226 Difference]: Without dead ends: 189 [2024-11-07 16:23:23,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:23:23,479 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 58 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:23,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 761 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:23:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-07 16:23:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 162. [2024-11-07 16:23:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 139 states have (on average 1.2374100719424461) internal successors, (172), 152 states have internal predecessors, (172), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 186 transitions. [2024-11-07 16:23:23,490 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 186 transitions. Word has length 46 [2024-11-07 16:23:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:23,490 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 186 transitions. [2024-11-07 16:23:23,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 17 states have internal predecessors, (57), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 186 transitions. [2024-11-07 16:23:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-07 16:23:23,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:23,491 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:23,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-07 16:23:23,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-07 16:23:23,691 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:23,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1010295875, now seen corresponding path program 1 times [2024-11-07 16:23:23,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:23,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984607664] [2024-11-07 16:23:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:23,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:23,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:23,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:23,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:23,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984607664] [2024-11-07 16:23:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984607664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700417566] [2024-11-07 16:23:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:23,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:23,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:23,799 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 16:23:23,800 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 16:23:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:23,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 16:23:23,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:23,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:24,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700417566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:24,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:24,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 13 [2024-11-07 16:23:24,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288166790] [2024-11-07 16:23:24,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:24,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 16:23:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 16:23:24,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:23:24,039 INFO L87 Difference]: Start difference. First operand 162 states and 186 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:24,123 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2024-11-07 16:23:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:23:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-11-07 16:23:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:24,124 INFO L225 Difference]: With dead ends: 167 [2024-11-07 16:23:24,124 INFO L226 Difference]: Without dead ends: 167 [2024-11-07 16:23:24,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:23:24,124 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 10 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:24,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 475 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-07 16:23:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-07 16:23:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 144 states have (on average 1.2291666666666667) internal successors, (177), 157 states have internal predecessors, (177), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2024-11-07 16:23:24,129 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 50 [2024-11-07 16:23:24,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:24,129 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2024-11-07 16:23:24,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:24,129 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2024-11-07 16:23:24,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-07 16:23:24,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:24,129 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:24,146 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 16:23:24,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:24,330 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:24,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2075496043, now seen corresponding path program 2 times [2024-11-07 16:23:24,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:24,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680198023] [2024-11-07 16:23:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:24,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:24,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:24,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:24,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:24,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:24,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:24,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680198023] [2024-11-07 16:23:24,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680198023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:24,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871552173] [2024-11-07 16:23:24,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:23:24,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:24,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:24,558 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 16:23:24,559 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 16:23:24,671 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:23:24,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:23:24,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 16:23:24,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:24,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:24,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-07 16:23:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:25,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871552173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:25,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:25,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2024-11-07 16:23:25,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817038264] [2024-11-07 16:23:25,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:25,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 16:23:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 16:23:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2024-11-07 16:23:25,029 INFO L87 Difference]: Start difference. First operand 167 states and 191 transitions. Second operand has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 30 states have internal predecessors, (88), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:25,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:25,571 INFO L93 Difference]: Finished difference Result 219 states and 247 transitions. [2024-11-07 16:23:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 16:23:25,572 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 30 states have internal predecessors, (88), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 50 [2024-11-07 16:23:25,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:25,573 INFO L225 Difference]: With dead ends: 219 [2024-11-07 16:23:25,573 INFO L226 Difference]: Without dead ends: 219 [2024-11-07 16:23:25,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2024-11-07 16:23:25,573 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 275 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:25,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1171 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 16:23:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-07 16:23:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 171. [2024-11-07 16:23:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 148 states have (on average 1.2297297297297298) internal successors, (182), 161 states have internal predecessors, (182), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 196 transitions. [2024-11-07 16:23:25,577 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 196 transitions. Word has length 50 [2024-11-07 16:23:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:25,578 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 196 transitions. [2024-11-07 16:23:25,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 30 states have internal predecessors, (88), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 196 transitions. [2024-11-07 16:23:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-07 16:23:25,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:25,579 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:25,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-07 16:23:25,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-07 16:23:25,780 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:25,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:25,780 INFO L85 PathProgramCache]: Analyzing trace with hash 84132113, now seen corresponding path program 1 times [2024-11-07 16:23:25,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506078235] [2024-11-07 16:23:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:25,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:25,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:25,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:25,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:25,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 16:23:25,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506078235] [2024-11-07 16:23:25,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506078235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891986811] [2024-11-07 16:23:25,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:25,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:25,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:25,904 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 16:23:25,906 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 16:23:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:26,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 16:23:26,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 16:23:26,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 16:23:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891986811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:26,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:26,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-11-07 16:23:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027939998] [2024-11-07 16:23:26,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:26,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 16:23:26,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 16:23:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:23:26,226 INFO L87 Difference]: Start difference. First operand 171 states and 196 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-07 16:23:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:26,461 INFO L93 Difference]: Finished difference Result 191 states and 217 transitions. [2024-11-07 16:23:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 16:23:26,461 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 51 [2024-11-07 16:23:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:26,462 INFO L225 Difference]: With dead ends: 191 [2024-11-07 16:23:26,462 INFO L226 Difference]: Without dead ends: 191 [2024-11-07 16:23:26,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2024-11-07 16:23:26,463 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 71 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:26,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 800 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:23:26,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-07 16:23:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-11-07 16:23:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 168 states have (on average 1.2083333333333333) internal successors, (203), 181 states have internal predecessors, (203), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 217 transitions. [2024-11-07 16:23:26,467 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 217 transitions. Word has length 51 [2024-11-07 16:23:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:26,467 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 217 transitions. [2024-11-07 16:23:26,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-07 16:23:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 217 transitions. [2024-11-07 16:23:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-07 16:23:26,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:26,468 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:26,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-07 16:23:26,669 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,SelfDestructingSolverStorable28 [2024-11-07 16:23:26,669 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:26,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:26,669 INFO L85 PathProgramCache]: Analyzing trace with hash -65350497, now seen corresponding path program 1 times [2024-11-07 16:23:26,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:26,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560620755] [2024-11-07 16:23:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:26,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:26,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:26,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:26,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:26,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:26,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:26,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560620755] [2024-11-07 16:23:26,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560620755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:26,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34625204] [2024-11-07 16:23:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:26,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:26,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:26,783 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 16:23:26,784 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 16:23:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:26,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 16:23:26,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:26,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:27,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34625204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:27,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:27,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2024-11-07 16:23:27,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609417965] [2024-11-07 16:23:27,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:27,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 16:23:27,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 16:23:27,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:23:27,004 INFO L87 Difference]: Start difference. First operand 191 states and 217 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:27,102 INFO L93 Difference]: Finished difference Result 202 states and 226 transitions. [2024-11-07 16:23:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:23:27,102 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2024-11-07 16:23:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:27,103 INFO L225 Difference]: With dead ends: 202 [2024-11-07 16:23:27,103 INFO L226 Difference]: Without dead ends: 202 [2024-11-07 16:23:27,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-07 16:23:27,104 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 41 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:27,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 604 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-07 16:23:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 180. [2024-11-07 16:23:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 157 states have (on average 1.197452229299363) internal successors, (188), 170 states have internal predecessors, (188), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 202 transitions. [2024-11-07 16:23:27,108 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 202 transitions. Word has length 51 [2024-11-07 16:23:27,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:27,109 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 202 transitions. [2024-11-07 16:23:27,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:27,109 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 202 transitions. [2024-11-07 16:23:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-07 16:23:27,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:27,110 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:27,127 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 16:23:27,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:27,310 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:27,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:27,310 INFO L85 PathProgramCache]: Analyzing trace with hash 231693916, now seen corresponding path program 1 times [2024-11-07 16:23:27,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:27,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479825219] [2024-11-07 16:23:27,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:27,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:27,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:27,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479825219] [2024-11-07 16:23:27,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479825219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:27,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:23:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856196360] [2024-11-07 16:23:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:27,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:23:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:23:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:27,360 INFO L87 Difference]: Start difference. First operand 180 states and 202 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:27,417 INFO L93 Difference]: Finished difference Result 179 states and 201 transitions. [2024-11-07 16:23:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:23:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 52 [2024-11-07 16:23:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:27,419 INFO L225 Difference]: With dead ends: 179 [2024-11-07 16:23:27,419 INFO L226 Difference]: Without dead ends: 179 [2024-11-07 16:23:27,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:27,419 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 37 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:27,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 214 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-07 16:23:27,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-07 16:23:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 169 states have internal predecessors, (187), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 201 transitions. [2024-11-07 16:23:27,423 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 201 transitions. Word has length 52 [2024-11-07 16:23:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:27,423 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 201 transitions. [2024-11-07 16:23:27,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:27,423 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 201 transitions. [2024-11-07 16:23:27,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-07 16:23:27,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:27,424 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:27,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-07 16:23:27,424 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:27,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:27,424 INFO L85 PathProgramCache]: Analyzing trace with hash 381207536, now seen corresponding path program 1 times [2024-11-07 16:23:27,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:27,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676801581] [2024-11-07 16:23:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:27,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:27,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:27,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676801581] [2024-11-07 16:23:27,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676801581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:27,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:27,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:23:27,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970302547] [2024-11-07 16:23:27,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:27,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:23:27,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:27,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:23:27,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:27,474 INFO L87 Difference]: Start difference. First operand 179 states and 201 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:23:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:27,536 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2024-11-07 16:23:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:23:27,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-07 16:23:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:27,538 INFO L225 Difference]: With dead ends: 178 [2024-11-07 16:23:27,538 INFO L226 Difference]: Without dead ends: 178 [2024-11-07 16:23:27,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:23:27,538 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 37 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:27,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 213 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-07 16:23:27,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-07 16:23:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 157 states have (on average 1.1847133757961783) internal successors, (186), 168 states have internal predecessors, (186), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2024-11-07 16:23:27,546 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 55 [2024-11-07 16:23:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:27,546 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2024-11-07 16:23:27,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 16:23:27,547 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2024-11-07 16:23:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-07 16:23:27,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:27,547 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:27,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-07 16:23:27,548 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:27,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash 572275180, now seen corresponding path program 2 times [2024-11-07 16:23:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:27,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389301655] [2024-11-07 16:23:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389301655] [2024-11-07 16:23:27,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389301655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447622944] [2024-11-07 16:23:27,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:23:27,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:27,796 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 16:23:27,797 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 16:23:27,917 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:23:27,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:23:27,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 16:23:27,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:28,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:28,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-07 16:23:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:28,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447622944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:28,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:28,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2024-11-07 16:23:28,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490169697] [2024-11-07 16:23:28,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:28,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-07 16:23:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-07 16:23:28,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2024-11-07 16:23:28,371 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand has 30 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:23:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:28,998 INFO L93 Difference]: Finished difference Result 223 states and 249 transitions. [2024-11-07 16:23:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 16:23:28,999 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 55 [2024-11-07 16:23:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:29,000 INFO L225 Difference]: With dead ends: 223 [2024-11-07 16:23:29,000 INFO L226 Difference]: Without dead ends: 223 [2024-11-07 16:23:29,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=1249, Unknown=0, NotChecked=0, Total=1482 [2024-11-07 16:23:29,001 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 227 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:29,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 972 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 16:23:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-07 16:23:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 179. [2024-11-07 16:23:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 158 states have (on average 1.1835443037974684) internal successors, (187), 169 states have internal predecessors, (187), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 201 transitions. [2024-11-07 16:23:29,004 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 201 transitions. Word has length 55 [2024-11-07 16:23:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:29,004 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 201 transitions. [2024-11-07 16:23:29,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:23:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 201 transitions. [2024-11-07 16:23:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-07 16:23:29,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:29,005 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:29,022 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 16:23:29,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:29,206 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:29,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:29,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1971683524, now seen corresponding path program 1 times [2024-11-07 16:23:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:29,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624599725] [2024-11-07 16:23:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:29,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:29,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:29,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:29,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:29,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 16:23:29,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:29,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624599725] [2024-11-07 16:23:29,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624599725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:29,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678762970] [2024-11-07 16:23:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:29,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:29,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:29,441 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 16:23:29,442 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 16:23:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:29,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 16:23:29,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:29,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:29,943 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 41 treesize of output 37 [2024-11-07 16:23:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:30,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678762970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:30,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:30,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 35 [2024-11-07 16:23:30,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256230720] [2024-11-07 16:23:30,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:30,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 16:23:30,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:30,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 16:23:30,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 16:23:30,314 INFO L87 Difference]: Start difference. First operand 179 states and 201 transitions. Second operand has 36 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:31,447 INFO L93 Difference]: Finished difference Result 225 states and 254 transitions. [2024-11-07 16:23:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-07 16:23:31,448 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 55 [2024-11-07 16:23:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:31,449 INFO L225 Difference]: With dead ends: 225 [2024-11-07 16:23:31,449 INFO L226 Difference]: Without dead ends: 225 [2024-11-07 16:23:31,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=488, Invalid=3418, Unknown=0, NotChecked=0, Total=3906 [2024-11-07 16:23:31,450 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 443 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:31,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 768 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 16:23:31,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-07 16:23:31,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 179. [2024-11-07 16:23:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 160 states have (on average 1.175) internal successors, (188), 169 states have internal predecessors, (188), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2024-11-07 16:23:31,454 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 55 [2024-11-07 16:23:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:31,454 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2024-11-07 16:23:31,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:23:31,454 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2024-11-07 16:23:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-07 16:23:31,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:31,454 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:31,469 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 16:23:31,658 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,SelfDestructingSolverStorable33 [2024-11-07 16:23:31,658 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:31,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:31,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1067468064, now seen corresponding path program 1 times [2024-11-07 16:23:31,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:31,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686339545] [2024-11-07 16:23:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:31,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:31,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:31,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:31,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:31,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686339545] [2024-11-07 16:23:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686339545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:31,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:31,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 16:23:31,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039507620] [2024-11-07 16:23:31,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:31,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:23:31,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:23:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:23:31,762 INFO L87 Difference]: Start difference. First operand 179 states and 202 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:31,832 INFO L93 Difference]: Finished difference Result 178 states and 201 transitions. [2024-11-07 16:23:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:23:31,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56 [2024-11-07 16:23:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:31,833 INFO L225 Difference]: With dead ends: 178 [2024-11-07 16:23:31,833 INFO L226 Difference]: Without dead ends: 178 [2024-11-07 16:23:31,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:23:31,833 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 34 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:31,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 223 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-07 16:23:31,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-07 16:23:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 160 states have (on average 1.16875) internal successors, (187), 168 states have internal predecessors, (187), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-07 16:23:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 201 transitions. [2024-11-07 16:23:31,836 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 201 transitions. Word has length 56 [2024-11-07 16:23:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:31,836 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 201 transitions. [2024-11-07 16:23:31,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 201 transitions. [2024-11-07 16:23:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-07 16:23:31,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:31,837 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:31,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-07 16:23:31,837 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:31,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:31,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1268228595, now seen corresponding path program 1 times [2024-11-07 16:23:31,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:31,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964703319] [2024-11-07 16:23:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-07 16:23:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 16:23:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-07 16:23:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:32,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:32,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964703319] [2024-11-07 16:23:32,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964703319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:32,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:32,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:23:32,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812599116] [2024-11-07 16:23:32,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:32,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:23:32,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:23:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:23:32,019 INFO L87 Difference]: Start difference. First operand 178 states and 201 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:32,148 INFO L93 Difference]: Finished difference Result 177 states and 200 transitions. [2024-11-07 16:23:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:23:32,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2024-11-07 16:23:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:32,150 INFO L225 Difference]: With dead ends: 177 [2024-11-07 16:23:32,150 INFO L226 Difference]: Without dead ends: 136 [2024-11-07 16:23:32,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:23:32,151 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 35 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:32,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 291 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:32,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-07 16:23:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-07 16:23:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 122 states have (on average 1.1967213114754098) internal successors, (146), 129 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 154 transitions. [2024-11-07 16:23:32,155 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 154 transitions. Word has length 57 [2024-11-07 16:23:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:32,155 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 154 transitions. [2024-11-07 16:23:32,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 154 transitions. [2024-11-07 16:23:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-07 16:23:32,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:32,157 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:32,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-07 16:23:32,157 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:32,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash -707287459, now seen corresponding path program 1 times [2024-11-07 16:23:32,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:32,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952216638] [2024-11-07 16:23:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:32,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-07 16:23:32,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:32,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952216638] [2024-11-07 16:23:32,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952216638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:32,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:23:32,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 16:23:32,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644818734] [2024-11-07 16:23:32,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:32,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 16:23:32,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:32,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 16:23:32,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:23:32,263 INFO L87 Difference]: Start difference. First operand 136 states and 154 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:32,347 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2024-11-07 16:23:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 16:23:32,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2024-11-07 16:23:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:32,348 INFO L225 Difference]: With dead ends: 134 [2024-11-07 16:23:32,348 INFO L226 Difference]: Without dead ends: 134 [2024-11-07 16:23:32,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:23:32,349 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 64 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:32,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 211 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-07 16:23:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-07 16:23:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 122 states have (on average 1.180327868852459) internal successors, (144), 127 states have internal predecessors, (144), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 152 transitions. [2024-11-07 16:23:32,351 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 152 transitions. Word has length 57 [2024-11-07 16:23:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:32,352 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 152 transitions. [2024-11-07 16:23:32,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 16:23:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 152 transitions. [2024-11-07 16:23:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-07 16:23:32,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:32,353 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:32,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-07 16:23:32,353 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:32,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1856118571, now seen corresponding path program 2 times [2024-11-07 16:23:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:32,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384764824] [2024-11-07 16:23:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-07 16:23:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384764824] [2024-11-07 16:23:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384764824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:32,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837494678] [2024-11-07 16:23:32,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:23:32,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:32,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:32,439 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 16:23:32,441 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 16:23:32,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:23:32,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:23:32,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 16:23:32,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:32,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:23:32,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837494678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:32,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:32,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2024-11-07 16:23:32,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964312347] [2024-11-07 16:23:32,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:32,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 16:23:32,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:32,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 16:23:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-07 16:23:32,798 INFO L87 Difference]: Start difference. First operand 134 states and 152 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 20 states have internal predecessors, (82), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:33,098 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2024-11-07 16:23:33,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 16:23:33,098 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 20 states have internal predecessors, (82), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2024-11-07 16:23:33,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:33,099 INFO L225 Difference]: With dead ends: 158 [2024-11-07 16:23:33,099 INFO L226 Difference]: Without dead ends: 158 [2024-11-07 16:23:33,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2024-11-07 16:23:33,099 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 160 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:33,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 879 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:23:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-07 16:23:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 134. [2024-11-07 16:23:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 127 states have internal predecessors, (143), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:33,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 151 transitions. [2024-11-07 16:23:33,103 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 151 transitions. Word has length 59 [2024-11-07 16:23:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:33,103 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 151 transitions. [2024-11-07 16:23:33,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 20 states have internal predecessors, (82), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 151 transitions. [2024-11-07 16:23:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-07 16:23:33,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:33,104 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:33,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-07 16:23:33,304 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,SelfDestructingSolverStorable37 [2024-11-07 16:23:33,305 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:33,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:33,305 INFO L85 PathProgramCache]: Analyzing trace with hash -463886192, now seen corresponding path program 3 times [2024-11-07 16:23:33,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933690653] [2024-11-07 16:23:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:33,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:33,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:33,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:33,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-07 16:23:33,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:33,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933690653] [2024-11-07 16:23:33,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933690653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:33,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512711758] [2024-11-07 16:23:33,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:23:33,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:33,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:33,492 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 16:23:33,492 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 16:23:33,606 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 16:23:33,606 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:23:33,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 16:23:33,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-07 16:23:33,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-07 16:23:34,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512711758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:34,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:34,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2024-11-07 16:23:34,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369697040] [2024-11-07 16:23:34,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:34,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-07 16:23:34,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:34,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-07 16:23:34,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2024-11-07 16:23:34,042 INFO L87 Difference]: Start difference. First operand 134 states and 151 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:34,683 INFO L93 Difference]: Finished difference Result 191 states and 215 transitions. [2024-11-07 16:23:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-07 16:23:34,683 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2024-11-07 16:23:34,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:34,684 INFO L225 Difference]: With dead ends: 191 [2024-11-07 16:23:34,684 INFO L226 Difference]: Without dead ends: 191 [2024-11-07 16:23:34,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=410, Invalid=2242, Unknown=0, NotChecked=0, Total=2652 [2024-11-07 16:23:34,685 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 219 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:34,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 505 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:23:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-07 16:23:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 147. [2024-11-07 16:23:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 135 states have (on average 1.1481481481481481) internal successors, (155), 140 states have internal predecessors, (155), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:34,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 163 transitions. [2024-11-07 16:23:34,688 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 163 transitions. Word has length 59 [2024-11-07 16:23:34,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:34,688 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 163 transitions. [2024-11-07 16:23:34,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:34,689 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 163 transitions. [2024-11-07 16:23:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-07 16:23:34,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:34,689 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:34,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-07 16:23:34,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-07 16:23:34,890 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:34,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2038463677, now seen corresponding path program 1 times [2024-11-07 16:23:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099313838] [2024-11-07 16:23:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:34,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099313838] [2024-11-07 16:23:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099313838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152865361] [2024-11-07 16:23:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:35,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:35,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:35,029 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:23:35,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-07 16:23:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 16:23:35,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 16:23:35,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 16:23:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152865361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:23:35,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 16:23:35,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 13 [2024-11-07 16:23:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801498562] [2024-11-07 16:23:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:23:35,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:23:35,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:23:35,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:23:35,193 INFO L87 Difference]: Start difference. First operand 147 states and 163 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:35,237 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2024-11-07 16:23:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:23:35,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2024-11-07 16:23:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:35,238 INFO L225 Difference]: With dead ends: 149 [2024-11-07 16:23:35,238 INFO L226 Difference]: Without dead ends: 149 [2024-11-07 16:23:35,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-07 16:23:35,239 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 26 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:35,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 306 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:23:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-07 16:23:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2024-11-07 16:23:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 136 states have (on average 1.1470588235294117) internal successors, (156), 141 states have internal predecessors, (156), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2024-11-07 16:23:35,242 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 59 [2024-11-07 16:23:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:35,242 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2024-11-07 16:23:35,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2024-11-07 16:23:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-07 16:23:35,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:35,243 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:35,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-07 16:23:35,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-07 16:23:35,443 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:35,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash -334333830, now seen corresponding path program 1 times [2024-11-07 16:23:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:35,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185965001] [2024-11-07 16:23:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:35,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:23:35,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185965001] [2024-11-07 16:23:35,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185965001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669148114] [2024-11-07 16:23:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:35,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:35,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:35,610 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:23:35,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-07 16:23:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:35,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 16:23:35,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 16:23:35,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 16:23:35,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669148114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:23:35,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:23:35,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 14 [2024-11-07 16:23:35,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046516107] [2024-11-07 16:23:35,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:35,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 16:23:35,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 16:23:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-07 16:23:35,934 INFO L87 Difference]: Start difference. First operand 148 states and 164 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:23:36,080 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2024-11-07 16:23:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 16:23:36,080 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2024-11-07 16:23:36,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:23:36,081 INFO L225 Difference]: With dead ends: 158 [2024-11-07 16:23:36,081 INFO L226 Difference]: Without dead ends: 158 [2024-11-07 16:23:36,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 125 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-07 16:23:36,081 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 99 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:23:36,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 427 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:23:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-07 16:23:36,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2024-11-07 16:23:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 138 states have (on average 1.144927536231884) internal successors, (158), 143 states have internal predecessors, (158), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:23:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2024-11-07 16:23:36,084 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 63 [2024-11-07 16:23:36,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:23:36,084 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2024-11-07 16:23:36,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:23:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2024-11-07 16:23:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-07 16:23:36,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:23:36,085 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:23:36,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-07 16:23:36,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-07 16:23:36,286 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:23:36,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:23:36,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1015429983, now seen corresponding path program 3 times [2024-11-07 16:23:36,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:23:36,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669582409] [2024-11-07 16:23:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:23:36,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:23:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:36,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:23:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:36,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:23:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:36,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:23:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:36,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:23:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:23:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 16:23:36,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:23:36,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669582409] [2024-11-07 16:23:36,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669582409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:36,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974156577] [2024-11-07 16:23:36,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:23:36,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:23:36,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:23:36,488 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:23:36,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-07 16:23:36,672 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 16:23:36,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:23:36,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-07 16:23:36,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:23:36,707 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 16:23:36,713 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 10 treesize of output 9 [2024-11-07 16:23:43,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:23:43,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 16:23:43,634 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-07 16:23:43,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2024-11-07 16:23:43,647 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-07 16:23:43,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-07 16:23:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-07 16:23:49,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:23:49,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974156577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:23:49,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 16:23:49,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 28 [2024-11-07 16:23:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764676950] [2024-11-07 16:23:49,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 16:23:49,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 16:23:49,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:23:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 16:23:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1252, Unknown=3, NotChecked=0, Total=1406 [2024-11-07 16:23:49,707 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand has 29 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-07 16:23:52,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 16:23:55,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 16:23:58,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 16:24:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:00,361 INFO L93 Difference]: Finished difference Result 203 states and 225 transitions. [2024-11-07 16:24:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 16:24:00,362 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 64 [2024-11-07 16:24:00,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:00,362 INFO L225 Difference]: With dead ends: 203 [2024-11-07 16:24:00,362 INFO L226 Difference]: Without dead ends: 203 [2024-11-07 16:24:00,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=481, Invalid=2822, Unknown=3, NotChecked=0, Total=3306 [2024-11-07 16:24:00,364 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 278 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:00,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 901 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1658 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2024-11-07 16:24:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-07 16:24:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 152. [2024-11-07 16:24:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 140 states have (on average 1.1428571428571428) internal successors, (160), 145 states have internal predecessors, (160), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2024-11-07 16:24:00,369 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 64 [2024-11-07 16:24:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:00,370 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2024-11-07 16:24:00,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 6 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-07 16:24:00,370 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2024-11-07 16:24:00,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-07 16:24:00,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:00,371 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:00,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-07 16:24:00,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:00,572 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:00,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:00,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1355034975, now seen corresponding path program 1 times [2024-11-07 16:24:00,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:00,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108741145] [2024-11-07 16:24:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:00,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:00,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:00,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:00,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:24:00,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:00,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108741145] [2024-11-07 16:24:00,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108741145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:00,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066709775] [2024-11-07 16:24:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:00,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:00,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:00,701 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:24:00,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-07 16:24:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:00,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 16:24:00,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 16:24:00,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:24:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 16:24:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066709775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:24:01,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:24:01,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2024-11-07 16:24:01,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349930744] [2024-11-07 16:24:01,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:24:01,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 16:24:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:24:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 16:24:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-07 16:24:01,025 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 18 states have internal predecessors, (102), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:01,221 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2024-11-07 16:24:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 16:24:01,221 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 18 states have internal predecessors, (102), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2024-11-07 16:24:01,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:01,222 INFO L225 Difference]: With dead ends: 173 [2024-11-07 16:24:01,222 INFO L226 Difference]: Without dead ends: 173 [2024-11-07 16:24:01,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:24:01,223 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 31 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:01,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 588 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:24:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-07 16:24:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2024-11-07 16:24:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 160 states have (on average 1.1375) internal successors, (182), 165 states have internal predecessors, (182), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 190 transitions. [2024-11-07 16:24:01,226 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 190 transitions. Word has length 64 [2024-11-07 16:24:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:01,226 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 190 transitions. [2024-11-07 16:24:01,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 18 states have internal predecessors, (102), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:01,226 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 190 transitions. [2024-11-07 16:24:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-07 16:24:01,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:01,227 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:24:01,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-07 16:24:01,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-07 16:24:01,427 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:01,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1170455040, now seen corresponding path program 3 times [2024-11-07 16:24:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:01,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956933662] [2024-11-07 16:24:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:01,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:01,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:01,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:01,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:01,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 45 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 16:24:01,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:01,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956933662] [2024-11-07 16:24:01,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956933662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:01,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631687881] [2024-11-07 16:24:01,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:24:01,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:01,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:01,742 INFO L229 MonitoredProcess]: Starting monitored process 29 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 16:24:01,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-07 16:24:01,929 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 16:24:01,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:24:01,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-07 16:24:01,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-07 16:24:02,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:24:02,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-07 16:24:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-07 16:24:02,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631687881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:24:02,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:24:02,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 38 [2024-11-07 16:24:02,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159177869] [2024-11-07 16:24:02,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:24:02,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-07 16:24:02,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:24:02,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-07 16:24:02,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1327, Unknown=0, NotChecked=0, Total=1482 [2024-11-07 16:24:02,712 INFO L87 Difference]: Start difference. First operand 172 states and 190 transitions. Second operand has 39 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 5 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-07 16:24:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:05,031 INFO L93 Difference]: Finished difference Result 254 states and 283 transitions. [2024-11-07 16:24:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-07 16:24:05,032 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 5 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2024-11-07 16:24:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:05,032 INFO L225 Difference]: With dead ends: 254 [2024-11-07 16:24:05,032 INFO L226 Difference]: Without dead ends: 254 [2024-11-07 16:24:05,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1079, Invalid=5727, Unknown=0, NotChecked=0, Total=6806 [2024-11-07 16:24:05,034 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 369 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:05,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 922 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 16:24:05,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-07 16:24:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 192. [2024-11-07 16:24:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 180 states have (on average 1.1444444444444444) internal successors, (206), 185 states have internal predecessors, (206), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2024-11-07 16:24:05,038 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 68 [2024-11-07 16:24:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:05,039 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2024-11-07 16:24:05,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 5 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-07 16:24:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2024-11-07 16:24:05,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-07 16:24:05,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:05,040 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-11-07 16:24:05,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-07 16:24:05,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:05,241 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:05,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash -137930781, now seen corresponding path program 4 times [2024-11-07 16:24:05,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:05,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848026622] [2024-11-07 16:24:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:05,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:05,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:05,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:05,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:05,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-07 16:24:05,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848026622] [2024-11-07 16:24:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848026622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574359019] [2024-11-07 16:24:05,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 16:24:05,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:05,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:05,442 INFO L229 MonitoredProcess]: Starting monitored process 30 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 16:24:05,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-07 16:24:05,593 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 16:24:05,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:24:05,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 16:24:05,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 18 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 16:24:05,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:24:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 16:24:05,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574359019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:24:05,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:24:05,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 25 [2024-11-07 16:24:05,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753245727] [2024-11-07 16:24:05,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:24:05,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 16:24:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:24:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 16:24:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2024-11-07 16:24:05,859 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand has 25 states, 25 states have (on average 3.96) internal successors, (99), 24 states have internal predecessors, (99), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:06,055 INFO L93 Difference]: Finished difference Result 232 states and 259 transitions. [2024-11-07 16:24:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 16:24:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 24 states have internal predecessors, (99), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2024-11-07 16:24:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:06,056 INFO L225 Difference]: With dead ends: 232 [2024-11-07 16:24:06,056 INFO L226 Difference]: Without dead ends: 232 [2024-11-07 16:24:06,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2024-11-07 16:24:06,056 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 98 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:06,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 550 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:24:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-07 16:24:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 207. [2024-11-07 16:24:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 195 states have (on average 1.1538461538461537) internal successors, (225), 200 states have internal predecessors, (225), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 233 transitions. [2024-11-07 16:24:06,060 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 233 transitions. Word has length 69 [2024-11-07 16:24:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:06,060 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 233 transitions. [2024-11-07 16:24:06,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 24 states have internal predecessors, (99), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 233 transitions. [2024-11-07 16:24:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-07 16:24:06,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:06,061 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:24:06,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-07 16:24:06,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:06,262 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:06,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1142903802, now seen corresponding path program 1 times [2024-11-07 16:24:06,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:06,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701849675] [2024-11-07 16:24:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:06,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:06,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:06,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:06,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:06,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 16:24:06,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:06,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701849675] [2024-11-07 16:24:06,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701849675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:06,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896323585] [2024-11-07 16:24:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:06,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:06,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:06,418 INFO L229 MonitoredProcess]: Starting monitored process 31 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 16:24:06,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-07 16:24:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:06,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 16:24:06,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-07 16:24:06,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:24:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-07 16:24:06,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896323585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:24:06,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:24:06,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 20 [2024-11-07 16:24:06,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003869982] [2024-11-07 16:24:06,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:24:06,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 16:24:06,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:24:06,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 16:24:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-07 16:24:06,783 INFO L87 Difference]: Start difference. First operand 207 states and 233 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 19 states have internal predecessors, (99), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:07,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:07,044 INFO L93 Difference]: Finished difference Result 227 states and 253 transitions. [2024-11-07 16:24:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 16:24:07,044 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 19 states have internal predecessors, (99), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 72 [2024-11-07 16:24:07,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:07,045 INFO L225 Difference]: With dead ends: 227 [2024-11-07 16:24:07,045 INFO L226 Difference]: Without dead ends: 227 [2024-11-07 16:24:07,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 140 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2024-11-07 16:24:07,045 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 53 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:07,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 607 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:24:07,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-07 16:24:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 204. [2024-11-07 16:24:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 192 states have (on average 1.140625) internal successors, (219), 197 states have internal predecessors, (219), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 227 transitions. [2024-11-07 16:24:07,049 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 227 transitions. Word has length 72 [2024-11-07 16:24:07,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:07,049 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 227 transitions. [2024-11-07 16:24:07,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 19 states have internal predecessors, (99), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 227 transitions. [2024-11-07 16:24:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-07 16:24:07,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:07,050 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:07,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-07 16:24:07,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-07 16:24:07,251 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:07,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:07,252 INFO L85 PathProgramCache]: Analyzing trace with hash 870668189, now seen corresponding path program 1 times [2024-11-07 16:24:07,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:07,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863595164] [2024-11-07 16:24:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:07,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:09,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:09,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:09,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:09,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 16:24:09,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:09,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863595164] [2024-11-07 16:24:09,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863595164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:09,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339091544] [2024-11-07 16:24:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:09,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:09,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:09,380 INFO L229 MonitoredProcess]: Starting monitored process 32 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 16:24:09,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-07 16:24:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:09,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-07 16:24:09,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:09,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-07 16:24:10,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-07 16:24:10,205 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 16:24:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:24:10,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:24:10,505 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 36 treesize of output 32 [2024-11-07 16:24:10,875 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 22 treesize of output 20 [2024-11-07 16:24:10,878 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 20 [2024-11-07 16:24:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 16:24:11,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339091544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:24:11,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:24:11,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21, 21] total 60 [2024-11-07 16:24:11,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907348665] [2024-11-07 16:24:11,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:24:11,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-07 16:24:11,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:24:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-07 16:24:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=3329, Unknown=0, NotChecked=0, Total=3540 [2024-11-07 16:24:11,341 INFO L87 Difference]: Start difference. First operand 204 states and 227 transitions. Second operand has 60 states, 59 states have (on average 2.440677966101695) internal successors, (144), 58 states have internal predecessors, (144), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:24:16,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:16,518 INFO L93 Difference]: Finished difference Result 296 states and 324 transitions. [2024-11-07 16:24:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-07 16:24:16,518 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.440677966101695) internal successors, (144), 58 states have internal predecessors, (144), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 72 [2024-11-07 16:24:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:16,519 INFO L225 Difference]: With dead ends: 296 [2024-11-07 16:24:16,519 INFO L226 Difference]: Without dead ends: 296 [2024-11-07 16:24:16,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2007 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=764, Invalid=8742, Unknown=0, NotChecked=0, Total=9506 [2024-11-07 16:24:16,523 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 349 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:16,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 974 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-07 16:24:16,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-07 16:24:16,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 238. [2024-11-07 16:24:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 226 states have (on average 1.1371681415929205) internal successors, (257), 231 states have internal predecessors, (257), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 265 transitions. [2024-11-07 16:24:16,528 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 265 transitions. Word has length 72 [2024-11-07 16:24:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:16,528 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 265 transitions. [2024-11-07 16:24:16,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.440677966101695) internal successors, (144), 58 states have internal predecessors, (144), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-07 16:24:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 265 transitions. [2024-11-07 16:24:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-07 16:24:16,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:16,529 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1] [2024-11-07 16:24:16,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-07 16:24:16,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-07 16:24:16,734 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:16,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1087373977, now seen corresponding path program 5 times [2024-11-07 16:24:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:16,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083135339] [2024-11-07 16:24:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:16,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:16,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:16,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:16,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:16,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-07 16:24:16,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:16,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083135339] [2024-11-07 16:24:16,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083135339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:16,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667749996] [2024-11-07 16:24:16,869 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 16:24:16,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:16,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:16,873 INFO L229 MonitoredProcess]: Starting monitored process 33 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 16:24:16,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-07 16:24:17,117 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-07 16:24:17,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:24:17,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 16:24:17,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-07 16:24:17,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:24:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-07 16:24:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667749996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:24:17,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:24:17,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2024-11-07 16:24:17,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689678613] [2024-11-07 16:24:17,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:24:17,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 16:24:17,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:24:17,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 16:24:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2024-11-07 16:24:17,376 INFO L87 Difference]: Start difference. First operand 238 states and 265 transitions. Second operand has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:17,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:17,562 INFO L93 Difference]: Finished difference Result 276 states and 306 transitions. [2024-11-07 16:24:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 16:24:17,563 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2024-11-07 16:24:17,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:17,564 INFO L225 Difference]: With dead ends: 276 [2024-11-07 16:24:17,564 INFO L226 Difference]: Without dead ends: 276 [2024-11-07 16:24:17,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2024-11-07 16:24:17,564 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 56 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:17,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 905 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:24:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-07 16:24:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 262. [2024-11-07 16:24:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 250 states have (on average 1.156) internal successors, (289), 255 states have internal predecessors, (289), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:17,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 297 transitions. [2024-11-07 16:24:17,572 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 297 transitions. Word has length 77 [2024-11-07 16:24:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:17,572 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 297 transitions. [2024-11-07 16:24:17,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 297 transitions. [2024-11-07 16:24:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-07 16:24:17,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:17,573 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:24:17,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-07 16:24:17,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-07 16:24:17,774 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:17,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash 451265183, now seen corresponding path program 2 times [2024-11-07 16:24:17,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:17,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308184030] [2024-11-07 16:24:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:17,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:17,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:17,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:17,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:17,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-07 16:24:17,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:17,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308184030] [2024-11-07 16:24:17,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308184030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:17,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592617330] [2024-11-07 16:24:17,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:24:17,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:17,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:17,863 INFO L229 MonitoredProcess]: Starting monitored process 34 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 16:24:17,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-07 16:24:18,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:24:18,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:24:18,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 16:24:18,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 16:24:18,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:24:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-07 16:24:18,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592617330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:24:18,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:24:18,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-11-07 16:24:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84948744] [2024-11-07 16:24:18,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:24:18,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 16:24:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:24:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 16:24:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:24:18,215 INFO L87 Difference]: Start difference. First operand 262 states and 297 transitions. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:18,483 INFO L93 Difference]: Finished difference Result 285 states and 320 transitions. [2024-11-07 16:24:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 16:24:18,483 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2024-11-07 16:24:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:18,484 INFO L225 Difference]: With dead ends: 285 [2024-11-07 16:24:18,484 INFO L226 Difference]: Without dead ends: 285 [2024-11-07 16:24:18,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-11-07 16:24:18,485 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 94 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:18,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 739 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:24:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-07 16:24:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 262. [2024-11-07 16:24:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 250 states have (on average 1.144) internal successors, (286), 255 states have internal predecessors, (286), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 294 transitions. [2024-11-07 16:24:18,489 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 294 transitions. Word has length 77 [2024-11-07 16:24:18,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:18,489 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 294 transitions. [2024-11-07 16:24:18,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 294 transitions. [2024-11-07 16:24:18,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-07 16:24:18,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:18,490 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:18,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-07 16:24:18,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:18,691 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:18,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1191758244, now seen corresponding path program 1 times [2024-11-07 16:24:18,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:18,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539304574] [2024-11-07 16:24:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:18,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:18,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:18,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:18,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:18,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-07 16:24:18,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:18,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539304574] [2024-11-07 16:24:18,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539304574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:18,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155917950] [2024-11-07 16:24:18,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:18,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:18,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:18,960 INFO L229 MonitoredProcess]: Starting monitored process 35 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 16:24:18,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-07 16:24:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:19,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 16:24:19,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 16:24:19,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:24:19,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 16:24:19,458 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 23 treesize of output 27 [2024-11-07 16:24:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 16:24:19,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155917950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:24:19,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:24:19,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2024-11-07 16:24:19,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917651614] [2024-11-07 16:24:19,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:24:19,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 16:24:19,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:24:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 16:24:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2024-11-07 16:24:19,666 INFO L87 Difference]: Start difference. First operand 262 states and 294 transitions. Second operand has 31 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:24:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:20,182 INFO L93 Difference]: Finished difference Result 277 states and 308 transitions. [2024-11-07 16:24:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 16:24:20,182 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 77 [2024-11-07 16:24:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:20,183 INFO L225 Difference]: With dead ends: 277 [2024-11-07 16:24:20,183 INFO L226 Difference]: Without dead ends: 277 [2024-11-07 16:24:20,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=293, Invalid=1599, Unknown=0, NotChecked=0, Total=1892 [2024-11-07 16:24:20,184 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 191 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:20,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 467 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 16:24:20,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-07 16:24:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 266. [2024-11-07 16:24:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 254 states have (on average 1.141732283464567) internal successors, (290), 259 states have internal predecessors, (290), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 298 transitions. [2024-11-07 16:24:20,187 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 298 transitions. Word has length 77 [2024-11-07 16:24:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:20,187 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 298 transitions. [2024-11-07 16:24:20,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-07 16:24:20,188 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 298 transitions. [2024-11-07 16:24:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-07 16:24:20,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:20,189 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:24:20,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-07 16:24:20,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-07 16:24:20,389 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:20,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1269900676, now seen corresponding path program 2 times [2024-11-07 16:24:20,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:20,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272056398] [2024-11-07 16:24:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:20,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:20,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:20,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:20,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:20,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 16:24:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272056398] [2024-11-07 16:24:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272056398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310070330] [2024-11-07 16:24:20,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:24:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:20,560 INFO L229 MonitoredProcess]: Starting monitored process 36 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 16:24:20,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-07 16:24:20,727 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:24:20,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:24:20,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 16:24:20,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 16:24:20,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:24:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-07 16:24:20,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310070330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:24:20,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:24:20,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25 [2024-11-07 16:24:20,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984754817] [2024-11-07 16:24:20,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:24:20,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 16:24:20,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:24:20,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 16:24:20,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2024-11-07 16:24:20,992 INFO L87 Difference]: Start difference. First operand 266 states and 298 transitions. Second operand has 25 states, 25 states have (on average 4.2) internal successors, (105), 24 states have internal predecessors, (105), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:24:21,337 INFO L93 Difference]: Finished difference Result 284 states and 317 transitions. [2024-11-07 16:24:21,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 16:24:21,338 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 24 states have internal predecessors, (105), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 80 [2024-11-07 16:24:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:24:21,339 INFO L225 Difference]: With dead ends: 284 [2024-11-07 16:24:21,339 INFO L226 Difference]: Without dead ends: 284 [2024-11-07 16:24:21,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 152 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2024-11-07 16:24:21,339 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 171 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:24:21,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 774 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:24:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-07 16:24:21,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 260. [2024-11-07 16:24:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 248 states have (on average 1.1411290322580645) internal successors, (283), 253 states have internal predecessors, (283), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-07 16:24:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2024-11-07 16:24:21,343 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 80 [2024-11-07 16:24:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:24:21,343 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2024-11-07 16:24:21,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 24 states have internal predecessors, (105), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 16:24:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2024-11-07 16:24:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-07 16:24:21,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:24:21,344 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:21,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-07 16:24:21,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:21,545 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2024-11-07 16:24:21,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:24:21,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1470262768, now seen corresponding path program 1 times [2024-11-07 16:24:21,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:24:21,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600789415] [2024-11-07 16:24:21,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:21,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:24:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:24,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-07 16:24:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:24,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-07 16:24:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:24,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-07 16:24:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:24,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 16:24:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 16:24:24,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:24:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600789415] [2024-11-07 16:24:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600789415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:24:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542296989] [2024-11-07 16:24:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:24:24,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:24:24,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:24:24,773 INFO L229 MonitoredProcess]: Starting monitored process 37 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 16:24:24,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-07 16:24:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:24:24,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-07 16:24:24,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:24:24,962 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